Color Black Brand N/A Model X3 Quantity 1 Piece Material ABS Function Handsfree Compatible Cellphone IPHONEMotorolaBlackberryLGSumsangNokiaSonyEricssonHTC Phonebook Capacity N/A Voice Prompt Yes Voice Prompt Language English Bluetooth Version V3.0 Transmit Frequency 2.4 GHz Transmt Distance 10 m MIC Effective Distance 2 m Frequency Response 2.4~2.48GHz SNR 45dB THD >1% Battery Capacity 650 mAh Charging Voltage 3.7 V Talk Time 10 Hour Standby Time 1000 Hour Charging Time 3 Hour Interface/Port Mini USB Packing List 1 x Speakerphone 1 x 12~24V car charger 1 x Clip 1 x Battery 1 x USB cable (75cm) 1 x Chinese / English manual