Functions:1.Bluetooth headset for ，take you experience to the next level with this wireless headset.2.Discuss gaming strategy with your teammates， trash-talk your opponents or just chat while play your favorite games.3.Immerse yourself in the complete gaming experience.4.Leave voice messages to your friends and family with message service. Features:Function button for:answering，ending，on，off.LED indicator light.receiver/speakermicrophone rotates:225 degrees.power interface/adapter for charging the unit.ear hookdecrease volume key (-)1increase volume key(+)2Specifications:signal output:bluetooth-v2.0，class2frequency band:2.4GHZ-2.4835GHZ，ISM bandtalk time:up to 8 hoursstandby time:up to 200 hours.data encryption:128 bits encryptedpower capacity:rechargeable li-polymerPackage content:1x Bluetooth headset1x Ear hook1x USB cable1x User manualNote 1: this headset is only used for talking， not for listening to music.Note 2: please make sure your PC has a Bluetooth receiver if you buy this headset to connect PC.