Feature: 1. BLUETOOTH 5.0 HANDS FREE: Bluetooth 5.0, effective distance 10m, compatible with all smart devices with Bluetooth function, strong signal connection. The phone will automatically answer after 3 beeps, allowing you to talk freely with your friends or business partners. 2. LONG PLAY TIME: The built in 180mAh rechargeable lithiumion battery supports 8 hours of continuous talk and play time and 160 hours of standby time. Convenient for motorcycle driving, takeaway, express delivery, outdoor sports, skiing, skating, etc. 3. LOUD NOISE REDUCTION: The engineer replaced speakers with better quality. By using windproof and noise reduction technology, this helmet headset delivers clear and high quality stereo music. Solve the sound problem of high speed driving. 4. WATER PROOF: Using nano coating technology, interference free dust and waterproof. Whether you are riding in the rain or on a dusty street, the headset is protected. With a detachable hook and loop design, the headset can be easily installed in the helmet. 5. SUPPORT ONE FOR TWO AND BATTERY DISPLAY: The new version of the helmet headset can be connected to two mobile phones at the same time, and the mobile phone screen can display the battery level. Support one key activation of for Siri voice. Specification: Item Type: Headphone Material: ABS Bluetooth Version: 5.0 Frequency: 2.402GHz-2.480GHz Bluetooth Distance: 10m-20m (depending On The Environment Around The Device Such As Obstacles) Microphone Transmission Distance: ≤1m Built-in Battery: 180ma Lithium Battery (delivered With Battery) Use Time: 8 Hours Charging Time: ≤2 Hours Standby Time: ≤160 Hours. Package List: 1 x Motorcycle Helmet Bluetooth Headset2 x Hook and Loop1 x Charging Cable1 x Manual