KEMI X17 open ear headphone Waterproof Wireless Sport Bone Conduction Headphones

* Chip model: AB5392B * Bluetooth version: 5.3 * Battery: 200mAh * Speaker: 14 * Play time: >5H * Standby time: 96H * Charging time: 2 * Function: IPX8 * Colour: Black * * Product size: 150*116*45mm * Net weight: 29g * Wireless working range: greater than 10 meters * Speaker sensitivity: 85??3dB * Supported protocols: A2DP, AVRCP, HFP * Speaker impedance: 8 ohms * Speaker frequency: 20Hz-20KHz * Input current/voltage: 5V * Material: ABS+PC * Charging interface: magnetic 32G memory *