Mono smallest bluetooth headset 1), light weight 2), mini size 3), comfortable to wear 4), clear sound Model no.: R6250Mono smallest bluetooth headset Feature:Version: V3.0+EDRMode: Hands Free/HeadsetFrequency:2.4GHzRange: 10MPower: AC Input 110-240V, DC Output 5VTalking Time: 3H aboutStandby Time: 75H aboutDimmension: 35*18*9mmProduct Weight: 3g aboutPhoto Mono smallest bluetooth headset