100% brand new and high qualityAuto Volume Adjustment automatically adjusts headset audio to your environment so calls are heard clearlyHD Voice technology provides crisp audio and a better sound experienceClear， wireless streaming of your favorite multimedia - GPS directions， music and internet radioInstantly connect headset with NFC enabled phones or tablets. Just tap the headset to your device and you're ready to goCompatibility:All Bluetooth enabled devicesBluetooth Headset size:6.5CM x 2.5CMPackage includes:1 x Bluetooth Headset1 x cable