Description:        Bluetooth version:V3.0 +EDR ，compatible with V2.0 and V1.1Bluetooth protocol: HSP\/HFP\/ A2DP \/AVRCPFrequency :2.4Ghz-2.48GHZMicrophone sensitivity:-42dBCharge voltage:5VCharge current:300mATransmission range:10MStandby \/talking time:120hours\/Minimum 3hoursProduct Net Weight: 15gSize: Headphone section: 4x1.8x3cmWire length: 46cm<br>Feature:Perfect sound quality and effect， when you go out to enjoy unfettered music anywhere. Stereo Bluetooth transmission.    Strong output power with outstanding sound quality.    Compatible with the smartphones \/tablets PC with BT function.    Supports hands -free talking，Stereo music output.    Support volume up\/down ，song pause\/next\/previous， answer\/ening\/dial calling.    Built-in high capacity battery for longtime working.    Long distance wireless transmission and long time standby.    Flat calbe design， fashionable，elegant and practical.    <br>Package included:1x Bluetooth 3.0 stereo headset1x Charging cable2x Ear hook2x Earbud hats1x User Manual<br>More detail: