Brand N/A Quantity 1 piece(s) Color Black Material ABS Function Bluetooth handsfree Compatible Cellphone Cellphones w/ Hands-free headset AVRCP bluetooth protocol Phonebook Capacity 8 Bluetooth Version V3.0+EDR Transmit Frequency ISM (2.4~2.48GHz) Transmt Distance 10 m MIC Effective Distance 1m SNR 60 dB THD <0.1% Frequency Response 20Hz~15KHz Talk Time 20 H Standby Time 1000 H Charging Time 3 H Charger Voltage 3.7V Battery Capacity 650 mAh Interface/Port Micro USB External Card Max. Support No Other Features Supports match two cellphones at the same time (max memorize 8 Bluetooth cellphones); Built in DSP noise suppression and echo elimination function; With Hi-Fi speaker and high sensitivity microphone; Transmitting power: class 2; With one magnetic iron can stick clip firmly; With English Chinese and Spanish voice indicating; Built-in lithium battery Packing List 1 x Car speaker phone 1 x English / Chinese user manual 1 x Clip 1 x USB cable (50cm) 1 x Car charger (12~24V)