Pro Sound for Pro Athletes - We listened to professional athletes and amateurs to create True Wireless earbuds that can stand up to the most strenuous workouts. Our research tells us that the sound has to be excellent, the earbuds have to be comfortable, look good, and function in the most demanding conditions. You want everything, no compromises, so that's what we created. We ensured that the Mantas 2.0 audio was powerful and balanced with enhanced clarity and superior dynamic range. The Mantas 2.0 sound amazing. One Earbud or Two, The Choice is Yours - With the Mantas 2.0, you can use both earbuds for stereo sound or use one earbud for mono sound. Right, left, or both, enjoy 100% control over your audio and how you listen to it. In certain situations, it can be dangerous to have two earbuds in simultaneously. When riding a road bike, you want to keep the ear closest to the cars open. When hitting downhill trails on your mountain bike, you should keep an ear open to listen for wildlife and anyone who might be "on your left". Whatever the application is, staying aware and being safe is essential. For safety reasons, some state and local laws prohibit using headsets when operating a bicycle. So you should only use the Mantas 2.0 for off-highway activities and do not use the Mantas 2.0 at excessive volumes because it may cause permanent hearing damage. Enough Power for the Whole Day - Wake up and run while listening to music. Commute to work listening to a podcast. Conference call during lunch. Hit the gym in the evening. The 6-hour playtime will get you through your busy, active day. The included charging case holds enough power to fully charge the Mantas 2.0 over four times. That way, you can spend less time worrying about powering up and more time powering ahead. Premium Sound 6 Hour Playtime Sweat Resistant Fast Charging Battery Charging Case Outdoor Tech Mantas 2.0 Wireless Earbuds