42-Hour Battery Life - Whether it's all commute, all day, or all trip, these earbuds have the staying power you'll need! Charge for 10 minutes to listen for 3 hours, or charge to capacity to listen for 9 hours. 42 hours of listening when used together with the charging case Lightweight and Compact - Each earbud weighs as little as 3.8 g, and was meticulously designed for a natural fit, based on ergonomic analysis on 10,000+ ear canals. Easier Connection - Long pressing on the button at the bottom of the charging case gives you a new way to pair your earbuds. Once paired, the earbuds will automatically reconnect to your device each time the case is opened. Robust Bluetooth 5.4 Connections - Experience each film scene and game move as if you're there on the spot, with the airtight audio-image syncing made possible by Bluetooth 5.4. IP54 Dust- and Splash-Resistance - Work out while wearing the earbuds without stressing out, thanks to IP54 dust- and splash-resistance.