Feature:1. Hands Free Call: Specially designed for motorcycle riders who are inconvenient to answer the phone during riding to avoid delay in answering the phone.2. Noise Reduction: The helmet headset supports active noise reduction to isolate wind noise and bring you a clear call and music listening experience.3. Fast Charging and Waterproof: Type C interface is adopted to greatly shorten the charging time. IP65 waterproof grade, safer for outdoor use.4. Advantages: Helmet intercom has anti aircraft, anti wind noise, phone priority and other functions. Many motorcycle riders are equipped with this headset.5. Applicable Scenario: No matter for urban cycling, outing, or long distance travel, especially team travel, helmet Bluetooth headset is an essential equipment.Specification:Item Type: Helmet Bluetooth HeadsetMaterial: ABSBluetooth Version: 5.0Connection Mode: Wireless, BluetoothTransmission Distance: Approx. 10m / 32.8ftFrequency Response: 20-20000KSound Generation Principle: Dynamic CoilWaterproof Grade: IP65Headset Sensitivity: 98bEarphone SNR: 101dbNoise Reduction Mode: ActiveBattery Capacity: 1500mAh 3.5V 1 Lithium Battery (Built in Battery)Working Current: 30-100mACharging Time: 6 HoursMicrophone Distance: Approx. 0.5m / 1.64ftBattery Working Time: 30HStandby Time: Two WeeksCharging Current: 500mAShutdown Current: 3uA.Package List:1 xHelmet Bluetooth Headset1 x Manual1 x Microphone Wire1 x Cable3 x Sticker2 x Clip