Utilizing JBL's signature Pure Bass sound, the JBL TUNE 115TWS True Wireless In-Ear Headphones are engineered to produce high-quality audio through their 5.8mm dynamic drivers. With up to 6 hours of battery life and a charging case that provides an additional 15 hours, you can listen to that audio all day long. An integrated microphone also lets you use the TUNE 115TWS earbuds for hands-free calls or to interact with a mobile device's digital assistant. Simply tap the earbuds to interact with either feature. Dual Connect The Dual Connect feature allows you to use just one earbud or both, as audio and calls are available in either configuration. It's an ideal way to use the earbuds while hearing more of the world around you, or to extend battery life as you listen to one earbud while charging the other.