1、[2 in 1] This product is a bluetooth device that integrates receiving and transmitting, which is easy to operate and can send and receive all signals freely. 2、[Receiving Mode] Through the product's Bluetooth reception mode, the music in the mobile phone can be transmitted to the traditional home equipment. 3、[Transmission Mode ] Through the bluetooth transmission mode of the product, the TV, CD player, MP3 or other sources can be sent to the Bluetooth speaker or bluetooth headset. 4、[Advanced Technology] Thanks to the bluetooth transmitter receiver's low latency technology, it also supports real time streaming of sounds from online games, TV and movies. 5、[Practical to Use] Perfect solution to the device limitations, the 2 in 1 wireless bluetooth adapter extends all kinds of equipment conversion function. 1 x 3.5mm Cable 1 x USB Charging Line 1 x Connection Line 1 x Manual 1 x Bluetooth 5.0 Transmitter Receiver Item Type: Bluetooth  5.0 Transmitter ReceiverMaterial: ABSBluetooth Version: 5.0Bluetooth Protocol Support: A2DP and AVRCPSupport Multi format Decoding: MP3, WAV, WMA, APE, FLACCharging Input Voltage: DC 5VWorking Hours: > 10HCharging Time: 2HSignal Ratio: ＞95db Input and Output Connection: 3.5mm Stereo Headphone StandCompatibility: Receiver is Compatible for Android System, Each Brand of for IOS Systems, Various Mobile Phones; Transmitter Compatible with for CSR, for Strongjet, for Airoha, for Vimicro, for Ankai, for RDA, for Jianrong, for Jeather and Other Bluetooth SchemesBattery: Built in Lithium Battery, 3.7V 400mah