Features:

 World’s First aptX HD in Both TX / RX Mode: 

 Powered by premium  CSR8675  chipset, VIKEFON Bluetooth adapter supports  the latest Bluetooth V5.0 , whereas most of others on Aliexpress are only equipped with CSR8670 chip and support Bluetooth V4.1, V4.0 or even V3.0. With aptX HD, our Bluetooth transmitter / receiver can stream stable audio and deliver CD-quality sound wirelessly over Bluetooth connections.

Real-Time Audio Transmission:

VIKEFON Bluetooth transceiver adopt the aptX Low Latency Technology in both TX & RX modes, which can reduce audio lag under 40ms and let you enjoy high-quality audio in sync with the picture (Your Bluetooth headphones or speaker must also support aptX LL / aptX as well.)

 Long Battery Life: 

 Internal battery provides Bluetooth adapter for more than 24 HOURS of use after 3 hours charging time. It also supports charging and streaming simultaneously.

 OPTICAL+RCA+3.5MM:  

 Apart from 3.5mm Aux / RCA connection, VIFEFON Bluetooth Adapter also supports optical cable(TOSLINK /SPDIF) input / output. With provided optical cable, you can enjoy high-quality digital sound through multiple audio outputs, such as wired stereo, speakers, or headphones.

 Under TX mode, two Bluetooth headphones 

 can be paired at once so parents can watch in silence and give children a needed break; Under RX mode, two smart devices can be paired for playing different songs. Record 8 devices and automatically re-pairing with existing paired devices.

 Auto-Turn OFF:  

 In RX or TX mode, The BT-B19 will automatically power off if there is no devices to be connected within 10 minutes.

 Pair with Each Other: 

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

Specifications:

Bluetooth version: V5.0, Class II

Battery: 600mAH rechargeable lithium battery

Net weight: about 45 g

Size: 63 x 63 x 20mm

Operating time in receiver mode: 22 hours

Operating time in transmitter mode: 26 hours

Charging time: 3 hours

Transmission range: within 10 m

Audio coding:

TX: aptX HD, aptX Low latency, aptX, SBC

RX: aptX HD, aptX Low latency, aptX, SBC, ACC

Package Include:

1 x Bluetooth Transmitter/Receiver Adapter

1 x Micro USB charging cable

1 x 3.5mm audio cable

1 x user manual