Specifications:Adjustable earhook design ensure the earphone fit on different ears and ensure all-day wearing comfort. Announce coming caller& 39;s phone number, with voice recognition technology, you can just say "Yes" to answer or say "No" to reject calls. Sweatproof technology protects this bluetooth-compatible headset from sweat, and coffee spills, so you can wear it in the office or at the gym. CVC 6.0 noise isolation technology intelligently filter wind or background noises, enable clearer sound experience when calling in crowds, and while listening to music.Type: bluetooth-compatible EarphoneMaterial: TPU, RubberBluetooth: V4.1Power Supply: Battery (Included)Call Time: 10 HoursMusic Time: 10 HoursStandby Time: 20 HoursWireless Distance: 10mFeatures: Ear Hook Design, Ergonomic, Handsfree Call Support, SweatproofSize: 10cm x 6cm x 3cm/3.94" x 2.36" x 1.18" (Approx.)Notes:Due to the light and screen setting difference, the color of item may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 Pair of bluetooth-compatible Earphones1 Pair of Earmuffs1 x Charging Cable1 x User Manual