... perfect sound Headband Bluetooth Headset1.Correspond with V2.1+EDR2.Headset Profile,Handsfree Profile and Advanced Audio Distribution Profile (A2DP)3 ... Time: Up to 8.5 hrs9.Working distance:within 10m Headset size:15.5*16.5*5.1cmWeight: 56gAPET box size ... -soft cushions for hours of ultimate comfort.Full controls on headset for changing volume, skipping tracks,toggling between calls and music ...