A lot of work has gone into the development of the f-Five True Wireless Microphone. It features a top-quality microphone for crystal-clear calls. With up to 4 hours of playtime on a single charge and three additional charges in the pocket-sized charging case, you’re set for a total of 18 hours of playtime. Simply place the f-Five earbuds in the charging box, and about an hour and a half later, the earbuds are ready with 4 hours of playback. This is a pair of truly wireless earbuds that you can rely on every day and for any occasion. F-Five is part of JAYS' F-series, the Freedom series. Wireless, with the highest call quality and a perfect fit, designed to make everyday life a little easier. The f-Five earbuds are ergonomic and designed to sit comfortably and securely in your ears for extended periods. With their lightweight and sleek design, the earbuds fit snugly in your ear without ever feeling bulky or unstable.