These Wireless Earbuds were engineered on the Bluetooth® 5.2 platform, allowing them to communicate as Bluetooth Low Energy devices, providing longer battery life for the listener and a stronger signal for better stability. The Wireless Headphones are constructed with custom tuned Neodymium Drivers to provide hours of listening enjoyment, with balanced immersive sound. Spire Wireless Earbuds are built to last for up to four hours of use on a single charge. The Charging Case provides an additional 300 mAh of charging power to allow for a total usage time of up to 20 hours. One Touch Media Controls provide total control of your Music, Videos and Media with the touch of a single earbud, on either side in one tap or multiple taps depending on the function you want performed. Perhaps, most importantly these Bluetooth® Earbuds were designed to be impervious to rain and sweat so you can focus on your workout. Great for running, hiking, biking, workouts, cross-fit and yoga.