1、For Bluetooth 2, low power, strong signal, fast response without delay. 2、Large battery capacity: charging for 1 hour to play music for up to 6 hours. 3、Portable design: Mini size and light weight, so you can take it anywhere. 4、Fully support for Bluetooth devices: support smart phones for Bluetooth A2DP function. 5、Compatible with home / speaker audio, car audio, headphones, 5mm audio input, etc. Features: For Bluetooth 4.2, low power, strong signal, fast response without delay. Large battery capacity: charging for 1 hour to play music for up to 6 hours. Portable design: Mini size and light weight, so you can take it anywhere. Fully support for Bluetooth devices: support smart phones for Bluetooth A2DP function. Compatible with home / speaker audio, car audio, headphones, 3.5mm audio input, etc. The housing is made of premium ABS plastic, wear-resistant and durable. Specifications: Material: ABS Color: As shows in pictures Product size: Approx. 6.2* 1.5* 1.5cm/ 2.44* 0.59* 0.59in for Bluetooth version: V 4.2 Working distance: 10 meters Audio connector: 3.5mm Charging time: 1 hour Maximum play time: 6 hours Package List: 1* Bluetooth Adapter 1* 3.5mm Audio Connector 1* Cable 1* User Manual