Athlete bluetooth stereo earphone Function: Accept/finish/reject/transfer call, call waiting, recall, volume +/-, multipoint connecting, music pause/play, noise reduction, pre/next song switch Bluetooth version: v4.1 Frequency range: 2.4ghz-2.48ghz Pair up to 2 bluetooth devices Operating distance: up to 10m (free space) Bluetooth profiles: a2dp, avrcp, hsp, hfp Standby time: up to 360 hours On/off key Talk/music playtime: approximately 6 hours Charging time: approximately 2.5 hours Frequency response: 20hz-20khz Operational temperature: -10 to 50c Accessories: 1*usb cable, 1*manul, 6*ear rubber Accessories: 1*usb cable, 1*manul, 6*ear rubber Each in black zipper bag Item no.:xhh-802 Qty: 60pcs G.W.: 6.2kgs Meast.: 30*32.5*41cm