Wednesday, 11 November 2020

GRV Smart Watch Answer Dial Call,Smart Watches for Women Men with Heart Rate Monitor

GRV Smart Watch Answer Dial Call,Smart Watches for Women Men with Heart Rate Monitor,Step Counter,Sleep Tracker,Sports Fitness Tracker Watch Call SMS Notification Smartwatch for Android iOS Phone




  • 【Seamless Connectivity with Bluetooth Calling & Smart Alerts】This Bluetooth calling smart watch ensures stable, fast connections with Bluetooth 5.0, letting you make and receive calls from your wrist. Stay updated with real-time notifications for SMS, WhatsApp, Facebook, Instagram, and more. Includes call reminders, alarms, stopwatches, and countdown timers, making it an ideal smart watch for work and daily life.
  • Multi-Sport Tracking & 24/7 Activity Monitoring】Track your fitness goals with 100+ sports modes including running, cycling, walking, football, basketball, golf, tennis, athletics, boxing, rugby and more. This fitness smart watch accurately measures steps, calories, active minutes, and distance. Perfect for those looking for a smartwatch for fitness tracking or sports enthusiasts.
  • Comprehensive Health Monitoring & Smart Wellness Insights】Stay healthy with continuous heart rate monitoring, SpO2 levels, and sleep tracking. The smartwatch offers detailed reports on sleep quality, including deep sleep and light sleep stages. It also features a menstrual cycle tracker, offering tailored health insights for women.
  • Customizable Watch Faces for Style & Versatility】Make it your own with customizable watch faces. Choose from 4 pre-installed styles or personalize your smartwatch with your favorite photo. This affordable smart watch for men and women offers flexible design options to suit any occasion.
  • Long Battery Life & Quick Charging for All-Day Use】Enjoy up to 5-7 days of battery life on a single charge with smart power-saving technology. Whether you’re tracking workouts, receiving notifications, or going about your day, this smartwatch stays powered longer, making it perfect for those looking for a long battery life smartwatch.
  • Waterproof Smartwatch for Everyday & Outdoor Adventures】Rated IP68 waterproof, this smartwatch is built for everyday use. It’s perfect for washing hands, exercising, or running errands in the rain. Not suitable for hot water or seawater, but great for light outdoor activities and casual workouts. 
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Thursday, 29 October 2020

TECKNET Bluetooth Shower Speaker, Portable Wireless Shower Speaker IPX7 Waterproof with 360° Stereo Sound

TECKNET Bluetooth Shower Speaker, Portable Wireless Shower Speaker IPX7 Waterproof with 360° Stereo Sound, RGB & LED Time Display,Suction Cup & Built‑in Mic,Ideal for Bathroom,Outdoor & Travel











https://amzn.to/435uRl2


  • 360° Stereo Sound & True Wireless Pairing: Enjoy rich bass, crisp treble, and well-balanced mids with immersive 360° surround sound from the TECKNET bluetooth shower speaker. Want a fuller stereo experience? Pair two portable speakers via True Wireless Stereo (TWS) and turn your bathroom, bedroom, or garden into your own private concert venue
  • IPX7 Waterproof & Strong Suction Cup: Built for all kinds of adventures, the TECKNET waterproof bluetooth speaker is perfect for use in the bathroom, by the pool, or at the beach. The upgraded suction cup sticks firmly to tiles, mirrors, glass and other smooth surfaces—an ideal wireless speaker for both indoor and outdoor use
  • RGB Light Show & LED Display: Featuring 7-colour RGB lighting and 8 dynamic modes that pulse to the beat, the TECKNET bluetooth speaker adds atmosphere to home parties, bath time or evening relaxation. The built-in LED display shows the time and battery level at a glance
  • Long Battery Life & Easy Control: With a 1000mAh battery, the TECKNET bluetooth speaker wireless offers up to 10 hours of playtime at 50% volume. Handy front-facing buttons make it easy to control volume, tracks, lights, and calls—even with wet hands. Whether you're indoors or outside, it’s the bathroom speaker that moves with your rhythm
  • Bluetooth 5.3 & Built-in Mic for Calls: The TECKNET portable speakers wireless bluetooth uses the latest Bluetooth 5.3 technology for faster pairing, a more stable connection, and up to 15 metres of wireless range. Whether you're relaxing in the bath or on the go, the built-in microphone allows hands-free calls with a single tap—no need to reach for your phone 
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Thursday, 29 May 2014

Introduction To Bluetooth

Introduction To Bluetooth

Bluetooth was designed to allow low bandwidth wireless
connections to become easy to use so even those who
are new to wireless can use them.  Version 1.1 of 
Bluetooth describes a low power, short range wireless
networking technology that uses radio waves to send
data at rates up to 720 kilobits a second.

The specification for Bluetooth provides for different
classes of radio that allow transmission ranges of
up to 100 meters by boosting the radio power.  The
technology of Bluetooth isn't limited to line of 
sight transmission since it uses directional waves
that are capable of transmitting through many 
obstructions.

Bluetooth is an industry standard communication of
wireless, meaning that it enables the connection
of other devices as well, such as cell phones,
computers, digital cameras, and other types of
electronic devices.  The specification of Bluetooth
defines a radio system and a "stack" of protocol 
layers and profiles.  The highest layer is the
application layer, while the lowest layer is the
radio.

The wireless technology of Bluetooth is positioned
to revolutionize the personal connectivity market
by providing freedom from inconvenient fixed type 
lines.  

The specification for Bluetooth eliminates the need
for cables by providing a small form factor, low
cost wireless solution that will link computers,
cell phones, and other electronics.  Bluetooth
also allows users to connect many ranges of devices
quickly and easily and expands communications 
capabilities as well.

Mycket DAB Radio Portable, DAB Plus Digital Radios with Bluetooth, USB Rechargeable FM Radios, Battery Powered Small Radio,Dual Alarms Clock,Sleep Timer, 40 Presets Stations, 2.4" Large Color Display 


 


  • DAB/DAB+ & FM digital radio: The portable DAB+ radio from Mycket offers you razor-sharp and clear audio quality, so you can enjoy your favourite radio stations anywhere. DAB offers improved quality of digital radio and allows you to access a range of digital radio stations. On the clear colour LCD screen, you know exactly what you are hearing.
  • 【Portable & Bluetooth 5.0】The sleek and compact design allows you to simply tuck it into your backpack or luggage - Out in the garden, in the kitchen, in the living room or on the go - wherever you like to enjoy your music, Mycket Portable DAB/DAB+/FM Radio with Bluetooth is ready to play your favorite music by connecting to your phone, tablet via Bluetooth. Equipped with a headphone jack, you can plug in wired headphones to enjoy music without disturbing others.
  • 【USB Rechargeable & Battery Powered】The rechargeable radio has a built-in 2200mAh lithium battery that can be used for up to 12 hours with a 2.5-hour charge using the included USB cable. Mycket portable DAB+ radio is your perfect travel companion to enjoy your favorite radio stations wherever you go.
  • 【40 Preset & Dual Alarms Timer Function】 Enjoy all of your favourite DAB / DAB+ and FM stations with superior quality sound. Easy set-up and quick Auto-Scan to search your favorite stations quickly, with 40 stations Presets to store and recall your favourite radio stations. Schedule Dual Alarms or Timer Function with either favorite station or buzzer sound as alarm ringtone to wake up you, automatically sets time and date update from DAB or FM stations.
  • 【Buy With Confidence】Our portable and compact design makes this DAB radio the perfect choice for home or as a gift. We are committed to providing the most satisfactory radios for our customers, so we are always developing and continuously improving to provide great sound and build quality. We also provide 24/7 customer service and 12 months cover to let our customer worry free. The neat gift box includes 1 x Portable DAB Radio, 1 x Micro USB Charge Cable and 1 x User's Manual.
 




The size of the Bluetooth radio is amazing, as a
Bluetooth radio can be built into one or two very
small microchips then integrated into any electronic
device where wireless operations would be an 
advantage.

Bluetooth also offers a robust link, which ensures
that normal operating circumstances are not 
interrupted by interference from other signals
that are operating in the same frequency band.

Also known for its worldwide operation, Bluetooth
radio operates in the 2.4 GHz frequency band, which
is license free and available to any type of 
radio system in the world.  No matter where you
are in the world, you count on Bluetooth to work.

Security is also important.  Offering advanced
security mechanisms, Bluetooth ensures a high level
of security.  Therefore, authentication will 
prevent unauthorized access to important data and
make it very difficult to listen in.

Bluetooth also boasts power optimization.  The radio
is power friendly and the software for Bluetooth
is very configurable, limiting the power consumption
of equipment.  The radio itself only consumes a 
small amount of power from a cellular phone.




Using Bluetooth

Using Bluetooth

The amazing technology of Bluetooth presents a great
way of exchanging data between two wireless devices.
Unlike telephones, there are no wires or messy 
leads to worry about.  You can enjoy wireless 
communications with short distances of up to thirty
feet.

Bluetooth also offers interoperability, meaning that
you can use your portable Bluetooth device to connect
with existing Bluetooth points.  This way, you won't
have to carry a data lead or CDs of drivers around
with you everywhere you go.  You can enjoy the best
of wireless without having to worry about installing
your software.

With today's Bluetooth, you can use your PDA and cell
phone to surf the net or check emails as you travel.
If you are in the business field, this can be very
beneficial, especially if you like to check your
email throughout the day.  Bluetooth will enable you
to check your email no matter where you are - which
is great news for those who like to travel.


Bluetooth will also enable to you to transfer files
as well, such as MP3 and photo to and from your mobile
device.  Bluetooth dominates the world of short range
wireless, enabling you to do more than you may 
have thought possible.

One of the best things to Bluetooth and something
everyone loves is the wireless headset.  Bluetooth
offers wire free headsets for your cell phone or
computer, which is great for those who like to walk
around or talk on the phone in the car, without 
having to worry about your hands getting in the way.

To make things even better, you can use a Bluetooth
GPS device for satellite navigation on your PDA,
laptop, or mobile.  If you travel - this can be 
really great to have.


Bluetooth Headset V5.4, Hands free Bluetooth Earpiece with Dual ENC Mic, Single wireless Headset 25Hrs Talk 180Hrs Standby Time, In-Ear Headphones for Driving/Business/Office with Android iOS Laptop 


 

  • HD Hands-Free Calling & Noise Reduction: The bluetooth earpiece is equipped with 14.2mm low-distortion composite dynamic drivers and built-in high-resolution AAC and APTX audio decoding technology. bluetooth headset features CVC 8.0 and ENC noise-cancellation technology, reducing up to 95.6% of background noise. This ensures your voice is heard clearly, enabling listeners to focus on your message without distractions. Enjoy crystal-clear calls and an immersive music experience.
  • Ultra-Long Battery Life & LED Power Display: The bluetooth handsfree earpiece comes with a 430mAh high-capacity battery case, offering 100 hours of standby time. The wireless headset supports Type-C or case charging, fully charging in just 1.5 hours. This flexible and portable charging option is perfect for long meetings, home offices, or travel, meeting daily needs. The LED digital display shows the remaining power of the charging case for precise power management.
  • Bluetooth 5.4 Technology: The wireless earpiece adopts the latest Bluetooth 5.4 chipset, providing a stronger connection and stable signal for your calls. Enjoy smoother, clearer music and dialogue without worrying about signal drops or stuttering. Even with your phone in your pocket, the headset maintains a seamless, stable connection up to 15 meters away, without signal loss or music dropouts. 

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  • Flexible Design & Superior Comfort: The handsfree Bluetooth headset is ergonomically designed for a secure and comfortable fit in either ear. It features a retractable, 180° swivel earhook and a 270° flip arm for personalized adjustment. The soft earbuds block external noise and come in 3 sizes (S/M/L) for a perfect fit. Made from TPU+PC with a spray-coated finish, the earhooks provide a stable, non-slip fit. The ultra-lightweight design minimizes ear strain, offering lasting comfort for extended use.
  • Convenient Push-button Control & Wide Compatibility: The handsfree Bluetooth earpiece features responsive control buttons for true hands-free use, enabling you to control songs, play/stop music, and manage calls—all with one hand. These Bluetooth headsets are compatible with most iOS and Android devices, offering faster transmission and stronger signal, ensuring clear calls and music for business, travel, sports, etc. Stay in control and connected with ease, no matter where you are. 
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10 Benefits Of Bluetooth

10 Benefits Of Bluetooth


                   


1.  Wireless

As you probably already know, there are many benefits
and advantages to using wireless devices.  Along with
improving safety as a result of eliminating wires
you don't need, wireless also offers you plenty of
other advantages.  When traveling with your laptop 
or other wireless devices, you'll no longer have to
worry about bringing connection cables.


2.  Bluetooth is actually inexpensive

The technology of Bluetooth is cheap for companies
to implement, which results in lower costs for the
company.  These savings are then passed from the
company on to you.

3.  Bluetooth is automatic

Bluetooth doesn't have you set up a connection or
push any buttons.  When two or more devices enter 
a range of up to 30 feet of each other, they will
automatically begin to communicate without you 
having to do anything.  

4.  Standardized protocol

Bluetooth is standardized wireless, meaning that
a high level of compatibility among devices is 
guaranteed.  Bluetooth will connect devices to
each other, even if they aren't the same model.

5.  Low interference

Bluetooth devices almost always avoid interference
from other wireless devices.  Bluetooth uses a 
technique known as frequency hopping, and also 
low power wireless signals.




6.  Low energy consumption

As a result of Bluetooth using low power signals,
the technology requires very little energy and will
use less battery or electrical power as a result.
This is an excellent benefit for mobile devices, 
as Bluetooth won't drain the battery.

7.  Sharing voice and data

The standard for Bluetooth will allow compatible
devices to share data and voice communications.
This is great for mobile phones and headsets, as
Bluetooth simplifies driving and talking on your
cell phone.


8.  Instant PAN (Personal Area Network)

You can connect up to seven Bluetooth devices to
each other within a range of up to 30 feet, forming

a piconet or PAN.  For a single room, you can
also set up multiple piconets.


9.  Upgradeable

Upgradeable is the standard for Bluetooth.  There
are newer versions of Bluetooth in the works, 
which offer many new advantages and backward 
compatible with older versions.


10.  The technology stays

Bluetooth technology is a world wide, universal
wireless standard.  With it being as popular as
it is, you can count on it being around for years
to come.  As more and more devices start to use
Bluetooth technology, more manufacturers will be
eager to make their products compatible.  A chain
reaction will occur, making Bluetooth the standard
for cutting edge wireless.


Lenovo IdeaPad Slim 3 | 14 inch Full HD Laptop | Intel N100 | 4GB RAM | 128GB SSD | Windows 11 Home in S mode | Microsoft 365 Personal | Abyss Blue 


 
  • Built for on-the-go impact - Designed for those who are constantly on the go and impacting their lives, the IdeaPad Slim 3 is built for lightness and thinness – up to 10% slimmer than the last generation.
  • Design and Military Grade - Available in Abyss Blue, this sturdy device is built in military-grade quality, withstanding shocks, dust, and extremes of travel in more hostile conditions.
  • Immerse yourself in the experience - Narrow bezels and FHD stunning display, while you stay focused on the 14-inch display. TÜV Certified Low Blue Light helps avoid eye fatigue. Dolby Audio ensures you’ll enjoy premium sound.
  • No waiting required - With its rapid-charging technology, the laptop delivers 2 hours of use on a 14-minute charge.
  • Connections for all your needs: Wi-Fi 6 + Bluetooth, 2x USB 3.2 Gen 1, 1x USB-C 3.2 Gen 1, 1x HDMI 1.4, 1x Headphone / microphone combo jack (3.5mm), 1x Card reader, 1x Power connector.
















How Bluetooth Works

How Bluetooth Works

Bluetooth devices will normally operate at 2.4 GHZ
in the license free, globally available ISM radio
band.  The advantage to this band includes worldwide
availability and compatibility.  A disadvantage to
this however, is that the devices must share this
band with other RF emitters.  This includes
automobile security systems, other wireless devices,
and other noise sources, such as microwaves.

To overcome this challenge, Bluetooth employs a
fast frequency hopping scheme and therefore uses
shorter packets than other standards within the
ISM band.  This scheme helps to make Bluetooth
communication more robust and more secure.

Frequency hopping
Frequency hopping is basically jumping from frequency
to frequency within the ISM radio band.  After a
bluetooth device sends or receives a packet, it
and the device (or devices) it's communicating with
hop to another frequency before the next packet is
sent.  This scheme offers three advantages:
1.  Allows Bluetooth devices to use the
entirety of the available ISM band, while never
transmitting from a fixed frequency for more than a
short period of time.  This helps insure that
Bluetooth conforms to the ISM restrictions on the
transmission quantity per frequency.
2.  Ensures that any interference won't
last long.  Any packet that doesn't arrive safely
to its destination can be resent to the next
frequency.
3.  Provides a base level of security as
it's very hard for an eavesdropping device to predict
which frequency the Bluetooth devices will use
next.


The connected devices however, must agree upon the
frequency they will use next.  The specification
in Bluetooth ensures this in two ways.  First, it
defines a master and slave type relationship between
bluetooth devices.  Next, it specifies an algorithm
that uses device specific information when
calculating the frequency hop sequences.

A Bluetooth device that operates in master mode can
communicate with up to seven devices that are set in
slave mode.  To each of the slaves, the master
Bluetooth device will send its own unique address
and the value of its own internal clock.  The
information sent is then used to calculate the
frequency hop sequences.

Because the master device and each of the slave
devices use the same algorithm with the same initial
input, the connected devices will always arrive
together at the next frequency that they have agreed
upon.
Follow Derek's Bookstore's board Media/Electronics on Pinterest.

As a replacement for cable technology, it's no
wonder that Bluetooth devices are usually battery
powered, such as wireless mice and battery powered
cell phones.  To conserve the power, most devices
operate in low power.  This helps to give Bluetooth
devices a range of around 5 - 10 meters.

This range is far enough for wireless communication
but close enough to avoid drawing too much power
from the power source of the device.


Latest Bluetooth Speakers


TP-Link UB5A Nano Bluetooth 5.3 USB Adapter for Multiple Devices, Long Range Bluetooth Adapter Compatible with Win 11/10/8.1/7, Dongle/Receiver, Plug & Play


  

  • o-Sized – Ultra-small for convenient portability with reliable high performance
  • Supported Operating System – Windows 11/10/8.1/7
  • Bluetooth 5.3 – Security and reliability improvement than last-gen Bluetooth
  • Bluetooth 5.0 - Backwards compatible with Bluetooth V4.0/3.0/2.1/2.0/1.1 devices, uses the latest Bluetooth 5.0 with low energy (BLE) technologyo-Sized – Ultra-small for convenient portability with reliable high performance, Dimensions: 0.58 × 0.27 × 0.74 in (14.8 × 6.8 × 18.9 mm)o size - Ultra small for convenient portability with reliable high performance, dimensions: 0.58 × 0.27 × 0.7 inches (14.8 × 6.8 × 18.9 mm)
  • Wireless Connectivity – Provides stable and convenient communication between Bluetooth devices and your PC or laptop 
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