Model 60I Quantity 1 piece(s) Color Black + Silver Function Handsfree Compatible Cellphone Iphone Samsung etc. moble phones w/ Bluetooth function Phonebook Capacity No Bluetooth Version 3 Transmit Frequency 2.4GHZ-2.480GHZ Transmt Distance 10 m MIC Effective Distance 2 SNR 82 dB THD 0.5% Frequency Response 300Hz-20KHz Talk Time 20 H Standby Time 800 H Charging Time 2 H Battery Capacity 890 mAh Interface/Port Mini USB External Card Max. Support NO Other Features Full duplex echo cancellation; DSP digital signal technology; Smart voice control (only supports English); Supports A2DP built-in loudspeaker; Auto power off after 5min disconnection Packing List 1 x Telephone kit1 x Clip1 x Charging cable (140cm)1 x Car charger