1、The product configuration of receive and start 2 in 1 Bluetooth device. 2、Through bluetooth receiving mode, can send music mobile phone to traditional home audio device. 3、Through bluetooth product start mode, send TV, CD player, MP3 or other source to bluetooth loudspeaker or bluetooth earphone, more convenient. 4、Made of high quality ABS material, sturdy, durable and long service life. 5、Professional manufacturing, stable characteristics and high reliability. Condition: 100% Brand New Item Type: Adapter Material: ABS Color: As Pictures Shown Bluetooth Version: 4.2 Bluetooth Protocol Support: A2DP and AVRCP Supports Multi Format Decoding: MP3，MAV，WMA，APE，FIAC Transmission Distance:＞ 20M (Open Place) Power Supply: 3.7V Power Consumption: Playback < 20mA, Connection Standby 0.6-4.5mA, Shutdown Within 2 Microamp Working Time :＞ 10h Charging Time: 2h Built-in Rechargeable Lithium Battery：200mAh SNR: > 95db Weight: Approx. 49g Support 1 with 2: For TWS function(Note: One with two means two phones can connected to one device, playing after priority. For TWS means one phone connected with two loudspeakers, one left channel and one right channel, left and right channels may or may not be separated)-This function updated when software updated Input/Output connection: 3.5mm stereo earphone Support compatibility: Receiver compatible for Android system/IOS system all kinds of mobile phones; transmitter compatible for CSR/Strongjet/Airoha/Vimicro/AnyKa/Jian Rong/Jerry Bluetooth Sound scheme 1 x Adapter 1 x USB Charging Cable 1 x 3.5mm Audio Cable 1 x Manual Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store