Quantity 1 Piece(s) Color Black Function Handsfree Compatible Cellphone Universal Phonebook Capacity No Bluetooth Version V4.0 Transmit Frequency 60~70D Transmt Distance 3 m MIC Effective Distance 120cm SNR 90 dB THD <=0.7% Frequency Response 100Hz~20KHz BM Battery Capacity 130 mAh Interface/Port 3.5mm External Card Max. Support No Other Features Music playing: Long press power button till signal light is flashing red and blue light then plug 3.5mm jack into Car AUX port matched successfully when only blue light is flashing then play the music in the phone music will play in car; Handsfree talking: music is auto stop if there is calling and then can talking handfree; Recall: Press power button for twice; Bluetooth speaker: Plug this kit into common speaker AUX port; Battery: 130mAh charging time: 2h; Standby time: 90h can play music or talking for 4h Packing List 1 x Car bluetooth kit 1 x Micro USB charging cable (55cm)