Wireless Charging - Grind Fuel is equipped with wireless charging capabilities, allowing you to conveniently charge your earbuds hassle-free. Skull-iQ Smart Feature Technology - Activate hands-free voice control or other voice assistants like Alexa by downloading the Skull-iQ App. Track with Tile - We included Tile Finding Technology to make it easy to find either earbuds if you ever misplace one. Just download the Tile App and simply 'ring' for your buds. Loaded with Features - Grind Fuel is packed with sweet features, including Personal Sound and Adjustable Stay-Aware Mode to enhance your listening experience. 40 Hours of Power - Grind Fuel delivers 40 hours of total battery life. Plus, find out how much battery is left every time you remove your earbuds from the case. Buy with Confidence - 1 year CA warranty included.