... :20hrs; 3.Standby:400hrs; 4.Bluetooth2.1+EDR Class 2 Red K1000 Wireless Bluetooth Headphones,K1000 foldable bluetooth headsetFeatures: 1.Stereo ... ):95 Db, Total Harmonic Distortion (THD):0.1%,7.5 Button design: MFB,VOL+,VOL-,FWD,REV,8.LED Indicator Status ... 1pc4. Earhook x 1pc5. Option: Travel charger or car charger Red K1000 Wireless Bluetooth Headphones,K1000 foldable bluetooth headset