GEARELEC Motorcycle Helmet Headset Bluetooth 5.0 Wireless Handsfree Calling Waterproof with Built-in CompassFunction:1. Using the latest Bluetooth 5.0 chip, it has super output signal and ultra-low power consumption.2. Supports all Bluetooth devices and supports connecting two mobile phones. Supports automatic answering of incoming calls, playback control and voice prompt.3. The drive uses high-quality speakers, with strong bass, clear midrange and clear treble.4. The shell adopts waterproof design, with PCB nano-coating, double waterproof design, don't worry about rain or snow.5. Built-in 1000 mAh high-capacity battery, with a standby time of 120 hours. Supports charging while using. Detachable buckle design makes it easy to install. Specification: Bluetooth version: 5.0 + EDR Frequency range: 2.402GHz-2.480GHz Transmission distance: 10 meters (depending on the device) Microphone transmission distance: le; 1 meter Lithium battery: 3.7V/1000mAh Continuous working time: 15-20 hours Charging voltage: 5V Charging time: 5-7 hours Standby time: le; 240 hoursBluetooth name: BT22BPhone call answering method: automatic/manualDrive: 30mm diameter, 32 ohms, 0.5WResponse frequency: 180-2000kHzSound to noise ratio: gt;80dBBluetooth distance: gt;10mInput method: BluetoothCharging voltage: USB 5V Distortion: lt;1% Product Size: 215x44x15mm Color: Black Product Function: Listen to music, answer incoming calls, voice navigation, voice calls Scope of application: Supports most smartphones, tablets, laptops, desktop computers and other digital devices Note: There may be slight size deviations due to manual measurement, different measurement methods and tools. The picture may not reflect the actual color of the item due to different shooting light, angle, and monitor. Packing List 1 X Bluetooth Receiver 1 X Mount 1 X USB Charging Cable 1 X Headset with Microphone 1 X Fixing Tape 1 X User Manual