Xu21 Bluetooth 5.0 Transmitter Receiver CSR8675 APTX LL HD BT Audio Music Wireless USB Adapter 3.5mm 3.5 AUX Jack/SPDIF/RCA for TV PC ( Item#: V7209 )

Features:
Supporting dual-stream (TX mode & RX mode), transmission can connect two BT audio device and receiver can connect two devices at the same time.
Support auto turn ON when connected to power. Suitable for any devices (smartphone, earphone, speaker,etc) any version of BT on the market.
Adopted the latest CSR8675 program, high-end BT V5.0 chip, you can enjoy HD Stero Sound Quality wirelessly over BT connections with aptX-source devices like TV, phones or tablets without any delay.
Built-in 600mAh lithium polymer battery that can work more than 20 hours after 3 hours charging time. When the power is lower than 20%, there will be a low battery alert. After 10 minutes without connection, the product automatically enters the sleep power-saving mode and comes with a battery protection IC. This is safe and reliable.
Apart from 3.5mm Aux / RCA connection, it 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 speakers, or headphones. 

Specification:
BT version: V5.0
BT chip: CSR8675
BT agreement support: RX: A2DP AVRCP  TX: A2DP
Battery: 600mAH rechargeable lithium battery 
Charging time: 3 hours 
Charging voltage: DC 5V
Operating time in receiver mode: 18 hours 
Operating time in transmitter mode: 22 hours 
Transmission range: 10m(open area)
Input/output connected mode: SPDIF, 3.5mm Stereo audio interface
Audio coding: TX: aptX HD, aptX Low latency, aptX, SBC 
RX: aptX HD, aptX Low latency, aptX, SBC, ACC 
Item Size: 6.5 * 6.5 * 1.7cm / 2.6 * 2.6 * 0.7in
Package Size: 12.3 * 10 * 4cm / 4.8 * 3.9 * 1.6in
Package Weight: 144g / 5.1oz

Package List:
1 * Xu21 Transmitter Receiver 
1 * 3.5mm AUX Audio Cable 
1 * Optical Cable 
1 * USB Cable 
1 * 3.5mm Plug to 2 RCA Plug Cable
1 * User Manual