13mm dynamic Driver (big sound, HiFi audio) 35Hrs Playtime, ultra fast charging (7hrs Playtime on one charge, 35h total listening time with the charging case, 10-minute charging offers 1h listening time) BT 5.3, One-step Reconnection (higher anti-interference capability, lower consumption, auto reconnection once opening the case) Low latency technology (sound and picture in sync, 65ms low latency) DNS enhanced calling (DNS calling noise reduction, clear calling experience) Lanyard hole design (enhanced portability, perfect for travel) Tilt design, long-lasting comfort (snug fit, more comfortable to wear) IP54 water resistant (IP54 waterproof rating, withstands rain and sweat) Universal compatibility (widely compatible with various Android, iOS, Windows devices)