Specifications:The product is set to receive and launch, two-in-one bluetooth-compatible device.The product is simple, which is able to launch and receiver freely.Through bluetooth-compatible reception mode you can send the phone music to the traditional home audio equipment.It is more convenient to send TV, CD player, MP3 or other sources to the bluetooth-compatible speaker or bluetooth-compatible headset through the product bluetooth-compatible launch mode.Due to the low latency technology, it also supports sound real-time transmission of online games, television and film.Built-in rechargeable battery, which has long battery life.It solves the imitations of audio equipment perfectly and extends a variety of audio equipment transfer function.Fast connection and more stable sound.Type: bluetooth-compatible Transmitter ReceiverMaterial: PlasticBluetooth Standard: bluetooth-compatible 4.2Support: A2DP, AVRCPSupport: MP3, WAV, WMA,APE,FLACTransmission Distance: >20MPower Supply: 3.7VWorking Time: >10HCharging Time: 2HInput Output Connection: 3.5mm JackBattery: Built-in Lithium BatterySize: 6.2cm x 4cm/2.44" x 1.57" (Approx.)Notes:Due to the light and screen setting difference, the item& 39;s color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 x bluetooth-compatible Transmitter Receiver1 x USB Cable1 x Audio Cable