Brand N/A Model BH-32 Quantity 1 piece(s) Color Black + silver Material ABS Function Handsfree Compatible Cellphone Suitable for the cellphone with handsfree headset AVRCP Bluetooth protocol Phonebook Capacity 8 Bluetooth Version V3.0 Transmit Frequency ISM (2.4~2.48GHz) Transmt Distance 10 m MIC Effective Distance 1 meters SNR 68 dB THD Frequency Response 20Hz~15000Hz Talk Time 15~17 H Standby Time 1000 H Charging Time 2~3 H Charger Voltage 3.7V Battery Capacity 650 mAh Interface/Port Mini USB External Card Max. Support No Other Features Supports 2 devices at the same time it can remember up to 8 Bluetooth cellphone; Built-in DSP noise suppression and echo cancellation; Built-in Hi-Fi speaker and high sensitivity microphone Packing List 1 x Bluetooth speakerphone 1 x Clip 1 x USB cable (55cm) 1 x Car charger (12~24V) 1 x Lithium battery (3.7V / 650mAh) 1 x Chinese / English user manual