IP68 Waterproof Designed specifically for swimming with full IP68 waterproof protection, allowing for worry-free use in aquatic environments Open-Ear Bone Conduction Utilizing advanced bone conduction technology, these headphones deliver clear audio without blocking your ears, enhancing situational awareness during sports activities Dual Mode: Bluetooth + 8GB Storage Enjoy the flexibility of Bluetooth connectivity or use the built-in 8GB storage for music playback without a phone Comfortable and Lightweight Weighing only 29 grams, the headphone ensures comfort during prolonged use Magnetic Charging Convenient magnetic charging ensures a secure connection and easy power replenishment, with a full charge taking only 2 hours Specifications: Bluetooth solution: JIELI 7006F V5.3 Connection distance: 10 meters MP3 memory: 8GB Support formats: mp3, wav Battery capacity: 180mAh Play time: 6 hours (80% volume) Talk time: 6 hours (80% volume) MP3 time: 4 hours (80% volume) Standby time: 300 hours Charging time: 2 hours Product weight: 29 grams Product material: ABS+PC Product size: 125*103*63mm Certificate: CE/ROHS/FCC/MSDS