HUAWEI freebuds 3 are the worlds first truly wireless open-fit earbuds with active noise cancellation and offer a lot of features, the 14 mm large dynamic driver and bass tube enhancement technology reproduce every details and brings extraordinary audio experience for users, 5 micro seconds processing latency, 8-scale frequency-divided noise filtering, Ear canal simulation based Active noise cancellation algorithm, intelligent wearing detection, smart gesture control, customizable operation on app AI Life. High sound quality with 14 mm large dynamic driver and bass tube enhancement technology reproduce every details and brings extraordinary audio experience. 5 micro seconds processing latency, 8-scale frequency-divided noise filtering, Ear canal simulation based Active noise cancellation algorithm. Intelligent wearing detection, smart gesture control, customizable operation on app AI Life. Headphone Features Connection: true wireless. Bluetooth enabled Bluetooth enabled for a wireless connection to your devices . Connects to devices via Wi-Fi. 14mm driver. In-line controls. Featuring gesture control. Active noise cancellation. IPX5 water resistant. Compatible with universal smartphones. Batteries required 2 x lithium battery (included) . Rechargeable battery. 4 hour battery life. 90 minute charging time. Fast charge to boost battery life. Charging case included. In the box: . General Information Model number: HUAWEI Freebuds 3. Manufacturers 2 year guarantee.