Nemesis True Wireless Earbuds HiFi Quality Sound are constructed with custom tuned 10mm Neodymium Drivers to provide hours of listening enjoyment with balanced immersive sound. We built our wireless earbuds 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 the Nemesis True Wireless Earbuds they are built to last up to 5 hours of use on a single charge. The charging case provides an additional 250mAh of charging power to allow for a total usage time of up to 20 hours. Our wireless earbuds offer one touch media control to provide total control of your music, videos, and media with the touch of a single button. Our Nemesis True Wireless Earbuds are designed to be impervious to rain and sweat so you can focus on your workout. Great for running, gym, hiking, biking, workouts, Cross fit, Yoga, etc.