Brand N/A Quantity 1 piece(s) Color Black + red Material ABS plastic Function Handsfree Compatible Cellphone Cellphone with Hands-Free Headset AVRCP etc. Phonebook Capacity 8 Bluetooth Version V3.0 + EDR Transmit Frequency ISM (2.4~2.4GHz) Transmt Distance 10 m MIC Effective Distance 1m SNR 68 dB THD Frequency Response 20Hz~15KHz Talk Time About 20 H Standby Time 1000 H Charging Time About 3 H Charger Voltage 3.7V Battery Capacity 650 mAh Interface/Port 5-Pin External Card Max. Support N/A Other Features Built-in DSP noise suppression and echo cancellation function; With Hi-Fi speaker and high sensitivity microphone; Transmitted power: Class 2; With magnet Packing List 1 x Hands-Free kit 1 x Chinese / English manual 1 x Clip 1 x USB cable (50cm) 1 x Car charger (12~24V)