Color Black Brand NO Model NO Quantity 1 Set Material Plastic shell Function HandsfreeMP3 Player Compatible Cellphone OthersUniversal Phonebook Capacity 0 Voice Prompt No Bluetooth Version V3.0 Transmit Frequency 1 fps Transmt Distance 10 m MIC Effective Distance 0 cm FM Frequency Range No Frequency Response 20~20KHz SNR 93dB THD 0.05% Battery Capacity No mAh Charging Voltage 5 V Talk Time 3 Hour Standby Time 64 Hour Charging Time 1 Hour Interface/Port 3.5mm Expansion Card Capacity (Max.) No Other Features With built-in 200mAh li-ion battery Certification It can pair with mobile devices via bluetooth to play music; the USB output can charge your cellphone tablet PC and other mobile devices conveniently. Packing List 1 x Car charger blueooth adapter (25~100cm) 1 x English manual