MASS_TOOL5_T_POSITION_TOP_BEGINMASS_APP5_T_3743_BEGINModel: i20 Bluetooth headsetBluetooth solution: Jerry V5.0, support for binaural callsSpeaker: high quality copper ring speakerChip: True Stereo ChipPlay time: 3-4 hoursStandby time: 30 daysCall time: 8 hoursHeadphone battery capacity: pure cobalt 50 mAhCharging box battery capacity: pure cobalt 400 mAhEffective distance: 10+MComplete weight: 122gPacking size: 10*10*3.3cmStandard: earphones *2+ charging box +USB charging cable + manual + box Product features, functions: the headset is automatically turned on from the charging compartment, put into the charging compartment to automatically charge; support siri call; answer / hang up the phone; switch songs.MASS_APP2_M_398_ENDMASS_TOOL2_M_POSITION_BOTTOM_END