Nemesis True Wireless Earbuds with Hi-Fi quality sound are constructed with custom tuned 10 mm Neodymium Drivers to provide hours of listening enjoyment with balanced immersive sound. They were built on the Bluetooth® 5.4 platform, allowing our Nemesis Wireless Earbuds to communicate as Bluetooth® Low Energy devices, providing longer battery life for the listener and a stronger signal for better stability. With an extended 20-hour playtime, our wireless earbuds are built to last for up to five hours of use on a single charge. The charging case provides an additional 250 mAh of charging power to allow for a total usage time of up to 20 hours. Videos and media with the touch of a single button. Waterproof and sweatproof, we designed our Bluetooth® Earbuds to be impervious to rain and sweat so you can focus on your workout. Great for running, gym, hiking, biking, workouts, crossfit, yoga and more.