Parts List: 1?ÁAdapter 1?ÁCharging Cable 1?ÁInstruction 1?Á3.5mm Audio Cable Product Name: Bluetooth Adapter Product Color: Black Battery Capacity: 140 mAh Working Range: 10m (No Obstacles) Charging Time: 1h Use Time: 4h Applicable Types: Computer, TV, projector (transmitting mode)/speaker, earphone (receiving mode) Packing Size: 103?Á68?Á18.3mm Notes: 1.There may be slight differences between the picture and the actual color of the commodity. We will try our best to show you the exact color. 2.Please allow slight dimension difference due to manual measurement.