Bluetooth 5.3 compatible, IPX7 waterproof open-ear clip-on wireless earphones. I'm selling these because I've purchased different earphones. They work perfectly fine. I've been using them for about six months, so please be aware of that. Thank you for your understanding. - Product Name: K6 - Bluetooth Version: Bluetooth 5.3 - Waterproof Performance: IPX7 - Package Contents: 2 Bluetooth earphones, charging case, charging cable, instruction manual - Design: Open-ear clip-on type Thank you for looking.