KEMI X7 bone conduction Earphones open ear sport running BT headphones waterproof wireless neckband headsets for swimming

* Chip model: AB5392B * Bluetooth version: 5.3 * Battery: 200mAh * Speaker: 16 * Play time:>6H * Standby time: 106H * Charging time: 2 * Function: Bluetooth version IPX6 * Color: black, black red, white orange, white * * Product size: 135*112*45 * Net weight: 32g * Wireless working range: greater than 10 meters * Speaker sensitivity: 88??3dB * Supported protocols: HFP A2DP AVRCP * Speaker impedance: 8 ohms * Speaker frequency: 20Hz-20KHz * Input current/voltage: 5V * Material: ABS+PC * Charging interface: magnetic charging