The Nothing Ear (Open) are wireless, open-ear earbuds designed for situational awareness, featuring a unique open-back architecture, titanium-coated 14.2mm drivers, dual-device Bluetooth 5.3 connectivity, and an IP54 sweat-resistant rating. Battery Life and Charging The earbuds provide up to 8 hours of playback, while the case, with its 635mAh battery, extends the total usage time to 30 hours. Charging is done via USB-C.