Long Range Bluetooth 5.0 Transmitter Receiver - NFC 262ft. / 80m - 3-in-1 Music






Long Range Bluetooth 5.0 Transmitter Receiver - NFC 262ft. / 80m - 3-in-1 Music Audio Adapter Low Latency aptX - HD - SPDIF - RCA - AUX 3.5mm - Black




Suitable for any devices(smartphone,earphone,speaker etc) any version of Bluetooth on the market, including: bluetooth 1.0/1.1/1.2/2.0/2.1/3.0/3.1/3.2/4.0/4.1/4.2/5.0 etc.


--Actually tested over a range of 265ft (80m) in open air and over 100ft (30m) indoors without any stuck and delay.Dual antennas features a wide and long transmission range, super stable and powerful. BTmagic transmitter receiver is perfect for indoor-outdoor connectivity no matter where your speakers / media center are set up


--Built-in 1000MAH powerful battery, it will offer 15 hours in TX mode & 20 hours in RX mode of solid use on one charge, you also can use it while charging. Supports both RCA/3.5mm aux audio connectivity digital/optical audio input and output, it is compatible with almost all devices. It can be Fast link by NFC.


--TX Mode:

  • connect bluetooth transmitter to audio output devices, such as TV, iPod or PC, You can enjoy ultra fast, high-fidelity audio from your bluetooth headsets, headphones or speakers flexibility.

--RX Mode:

  • make your old home stereo system Bluetooth-enable and rejuvenate again.

--Bypass Mode (wired):

  • you no longer need to plug/unplug any wires, easily switch it to other two modes.


--Support Dual Stream in TX Mode and Multi-Point Connection in RX. Pair with two bluetooth headphones/speakers to double the fun. Or connect two smart phones at the same time. We suggest to pair two same brand audio receiving devices to achieve AptX Low Latency. Pass CE, FCC,ROHS certification, 100% Satisfaction guarantee.




Long Range:

  • Long range Bluetooth adapter can help to achieve 262ft(80m) line-of-sight in the open air and UP TO 80-110FT (25-35M) INDOORS.

No lip sync delay & Perfect Hi-Fi sound:

  • AptX Low Latency technology eliminate Bluetooth audio delay, so you can enjoy high-clarity sound and watch TV / Movie / Video in perfect synchronization. aptX HD technology provide you perfect sound experience.

Dual Stream:

  • Dual link feature of BT-B21 Bluetooth adapter also enables simultaneous streaming to 2 headphones or speakers.

Bluetooth Extender:

  • Extend Bluetooth range by cabled to weak wireless audio devices, or pair with another Bluetooth adapter to boost Bluetooth single.

Bypass with 4 different work modes:

  • 1) Aux in/Aux out: Aux LED on.
  • 2) Opt in/Opt out: Opt LED on.
  • 3) Aux in/Opt out: Aux LED flash first and then Opt LED on.
  • 4) Opt in/Aux out: Opt LED flash first and then Aux LED on.

NFC Function:

  • Put cellphone next to BT-B21 wireless Bluetooth receiver transmitter which in pairing mode, simplify the pairing! Don‚Äôt need to pair manually - *NOTE: Please make sure your mobile phone with NFC function and on.The function only be supported by RX mode.

Pair with each other :

  • Support work with each other, One as a transmitter, the second - as a receiver.

NOTED: Its because of for  sony's Bluetooth headset/earphone/headphone uses a special encoding method, its not public for other devices to connect.So when you use for sony's Bluetooth headset/earphone/headphone to pair with our devices in bluetooth transmitter mode, it may takes longer time to pair.The pairing time varies on different model of Sony . But they can surely pair successfully with our devices.




  • Bluetooth Standard: V5.0
  • Bluetooth Range: Class 1, Up to 265Ft
  • Support: A2DP, AVRCP
  • Codec: aptx HD, aptX Low Latency, aptX, SBC, AAC
  • Model:¬†BT-B21-Black
  • Output Wattage:¬†3.7 watts
  • Power Source:¬†Battery
  • Are Batteries Included:¬†Yes
  • Batteries Required:¬†Yes
  • Battery Cell Composition:¬†Lithium Ion
  • Wireless Standard:¬†Bluetooth
  • Connector Type:¬†bluetooth, wireless, wi-fi, usb

 Additional Information

  • Item Weight:¬†68 g
  • Shipping Weight:¬†222 g
  • Batteries:¬†1 Lithium ion batteries required. (included)
  • Item model number: BT-B21


  • For TV optical output - set audio format to PCM. Dolby / DTS are not supported.
  • It doesn‚Äôt support aptX HD when dual link. NOT simultaneously supports aptX HD and aptX LL.
  • For non-aptX LL supported headphones/speakers (e.g. Bose, Beats, Sony headphones),¬†will work with them using SBC or aptX codec with 70-200ms latency - Lip-sync delay could be noticed by sensitive users.
  • Please power the unit by a separate USB power supply, plugged directly into a wall socket. If you try powering this unit from other USB port, you MIGHT get a hum in the circuit.
  • Operation range can be affected by Wi-Fi routers, Wireless TV adapters, physical obstructions like walls, metal obstacles etc. and also depends on receiving device.
  • If there is a situation where you cannot pair, please make sure Bluetooth devices with enough power; make sure your BT headphones or speakers not in pairing mode with other device; or set all devices and our transceiver to factory default and pair again.


Package includes:


  • 1x Bluetooth Transmitter/Receiver Adapter
  • 1x Micro USB charging cable
  • 1x 3.5mm audio cable
  • 1x 3.5mm jack to 2 RCA plug cables
  • 1x Digital Optical Toslink Audio Cable
  • 1x User manual


Note: Photos and/or description may differ from actual products. Information from suppliers or packaging. No accessories inlcuded.

BT-B21 - Made in China - Adapter - NEW - 7999/6900 - TGCP - 14/16

IRN: 642721036434-6900


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