Defunc TRUE PLUS Key Features Wireless In-Ear Headphones Dual Microphones 35 Hours Playtime Bluetooth 5.0 & USB-C IPX4 Water & Sweat Proof Overview The Defunc TRUE PLUS is a top-of-the-line product with perfect fit and seamless sound. Dual microphones and adjustable head make these the perfect choice for video conferences as well as talking to friends when you are out and about. The included charging case gives 35 h of playtime and the included sport wings gives you a super secure fit at the gym and elsewhere.