Description: 1. Bluetooth V5.0, supporting most Bluetooth devices, low power consumption 2. The 500mAh charging box can charge two earphones approximately 5 times, providing over 20 hours of music 3. IPX5 waterproof technology eliminates the need to worry about water and sweat 4. 6ms dual drive unit, enjoying the deep and loud sound of 3D bass music 5. Intelligent button control function, supporting on/off songs, phone calls, and voice assisted calls. Specifications: Model name: J92 Sports Bluetooth Headset Bluetooth version: 5.0 Receiving distance: 10m (no obstacles) Headset battery capacity: 40mAh Charging time: about 1.5 hours Net weight of helmet: about 11.3g Net weight of electric cab: about 66.8g Battery capacity in electrical room: 500mAh Can charge the headset: about 5 times Battery charging time: about 2 hours Charging input: 5V-1A This package contains: 2 * Bluetooth headset 1 * Charging condition 1 * USB cable 1 * User Manual 3 * Headphones