Custom oversized 40mm dynamic drivers produce Hi-Fi audio producing exceptional stereo sound quality. pTron Soundster Lite passive canceling headphones reproduce your music with extended high frequencies that reach up to 20 kHz for extraordinary clarity and detail. Get an ultra-fast and virtually unbreakable connection between Soundster Lite wireless headphones and your mobile device. Compatible with smartphones, tablets, laptop computers, and more. 12 hours of music playback time on a single charge of 2 hours. Get infinite playtime via the 3.5mm audio port. Take or make calls seamlessly on your wireless over-ear headphones via the built-in mic. The multi-function buttons allow you to manage calls and music efficiently. The spacious soft earmuffs give an excellent fit, ensure a high level of wearing comfort, even during longer sessions. The advanced Bluetooth 5.0 wireless technology is widely compatible with all the Bluetooth enabled smartphones, tablets, laptops/computers, and other Bluetooth enabled multi-media devices.