Specifications:Version: V4.0Standby time: 240hMusic time: 6hTalking time: 6.5hCharging time: 3hFrequency: 2.402G-2.480GTemperature: -20-60Transmission power: 0dbmRange: 10mWeight: 18gPackage include:1* Bluetooth sports headset1* USB Charging Cable1* User manual1* Pair Silicone ear tipsFeatures:-HD sound-Multipoint-IOS power display-Stereo music-Support voice prompt-Strong noise reduction-Making and receiving calls-Tracks forwarding & backwarding-Support music play & pause