Caller ID Report: Announce Coming Caller's Phone Number, Pause Music for InComing Calls. Voice Recognition: Manage Calls Handsfree Without Pressing Buttons Through Voice Recognition Technology,Just Say "Yes" to Answer or Say "No" to Refuse call. Noise Cancelling Technology: Triple Mic Technology Cancels Background and Wind Noise When in Crowds. Sweatproof Technology: Protects This Bluetooth Headset from Sweat, and Coffee Spills so You Can Wear the Headset in the Office or at the Gym. 180adjustable Ear-fit design allows you to adjust the angle to fit on your right or left ear. You could also move the boom mic up and down,this make it very easy for people to tell if you are on a phone call or not. Enhance battery capacity ensure the longest using time(when full charged),it displays the battery meter on your smartphone,remind you to fast charge for next time: Specifications: Color: Black Chip: CSR8615 Smart chip Bluetooth version: V4.1+EDR downward compatible with V3.0, V2.1, V1.1 Bluetooth range: 10 meters Transmission frequency: 2.4GHz Frequency Response Range: 20-20000Hz Resistance: 32 Noise reduction: CVC 6.0 Battery capacity: 90mAh Standby time:12 days Phone time:6-8 hourss Music Playing Time:6-8 hours