How to Use: 1. Power on or off, press the red power button for 3 seconds, the device will prompt the sound as "dong dong dong" and "Bluetooth mode", press again for 3 seconds, the device will shut down. 2. Automatic re pairing If your device is the most recently paired device, when the device is turned on again, the headset will automatically re‑pair with your device. 3. After the automatic search for paired devices is turned off, the device will automatically enter pairing mode again. Specification: Item Type: Motorcycle Helmet Bluetooth Headset Material: ABS Bluetooth Version: V5.0+EDR Frequency Range: 2.4026GHz-2.480GHz Transmission Distance: Approx. 10m / 33ft (the transmission distance is different due to environmental factors and mobile Bluetooth devices) IP65 Waterproof Support FM Radio Built in Polymer Lithium Battery: 1000mAh (included) Play Time: 40 Hours Charging Time: 2 Hours Standby Time: 300 Hours Package List: 1 x Headphone 1 x Data Cable 6 x Hook & Loop 1 x Soft Mic 1 x Hard Mic 2 x Screw 1 x Wrench 1 x Manual