Specifications: - Chip solution: AB5656C2 - Bluetooth version: 5.4 - Horn specifications: Φ 12mm - Playback duration: approximately 5 hours (50% volume) - Call duration: approximately 4 hours (50% volume) - Battery specifications: headphone 35mAh, charging compartment 300mAh - Charging duration: About 1 hour for headphones and 2 hours for charging compartment - Charging frequency: Charge the earphones 3 times in the compartment - Charging interface: Type-C (5V/0.5A) - Waterproof level: Earphone IPX5, charging compartment not waterproof