Auto-pairing headphones with True Wireless technology are an upgraded version, with improved sound quality and size and wireless battery charging. It features Bluetooth® 5.1, automatic pairing, automatic power-on, built-in music controls and dual microphones for hands-free use. Once the headphones are removed from the case, they automatically turn on and sync with each other, making it much easier to sync your headphones. The case also serves as an external battery for the headphones and can be charged with the included Type-C cable. Once the 400 mAh battery in the case is fully charged, it serves to charge the headphones three times to 100%. Offering over 6 hours of playback time at maximum volume on a single charge, these headphones are a must-have product for any traveler. The ergonomic design of the headphones keeps them secure while you’re on the go. The headphones take 1.5 hours to charge to 100%. The case can be charged in less than 1.5 hours. Compatible with Siri and Google Assistant. Bluetooth® operating range is 10 meters. Delivered in a premium gift box. ABS plastic.