Skull-iQ Smart Feature Technology allows for hands-free voice control or other voice assistants like Alexa via the Skull-iQ App. Worry-Free Wireless is enhanced with Tile Finding Technology, enabling easy tracking of either earbud if misplaced, by simply 'ringing' them through the Tile App. Grind is packed with features like Personal Sound and Adjustable Stay-Aware Mode to enhance your listening experience. Enjoy a massive 40 hours of total battery life, and check your remaining battery percentage every time you remove the earbuds from the case. This product comes with a 1-year UK warranty.