Feature:1. BT 5.0 \u0026 Intelligent Noise Reduction: This helmet headset using BT 5.0 technology is compatible with almost all mobile devices, with superior signal transmission and low power consumption. Intelligent noise reduction technology eliminates various noises and provides stereo sound for riding.2. Automatic Answering: The helmet BT headset features an automatic answering function, no need to answer the phone manually. When riding a motorcycle, don\u0027t worry about missing any calls.3. Rechargeable Design: The USB charging interface is convenient and easy to charge. Built-in 180mAh rechargeable lithium-ion battery, with 160-hour standby time and 8-hour playtime.4. Easy to Operate: The headset is designed with three buttons, used to control the volume, music playback and call.5. Easy Installation: Design with removable adhesive tapes, easy to install the headset into the helmet and fix it firmly.Specification:Features:BT 5.0 & Intelligent Noise Reduction: This helmet headset using BT 5.0 technology is compatible with almost all mobile devices, with superior signal transmission and low power consumption. Intelligent noise reduction technology eliminates various noises and provides stereo sound for riding.Automatic Answering: The helmet BT headset features an automatic answering function, no need to answer the phone manually. When riding a motorcycle, don't worry about missing any calls.Rechargeable Design: The Micro USB charging interface is convenient and easy to charge. Built-in 180mAh rechargeable lithium-ion battery, with 160-hour standby time and 8-hour playtime.Easy to Operate: The headset is designed with three buttons, used to control the volume, music playback and call.Easy Installation: Design with removable adhesive tapes, easy to install the headset into the helmet and fix it firmly.Specifications:Item Name: Helmet BT HeadsetMain Material: ABSMicrophone Transmission Distance: <1 mLithium-ion Battery: 3.7V/180mAhCharging Voltage: 5VBT Version: 5.0+ EDRFrequency: 2.402GHz-2.480GHzPlayback Time: ≤8 hoursCharging Time: ≤1.5 hoursStandby Time: ≤160 hoursRange: 20-30 meters (depending on the surrounding environment, such as obstacles, etc.)Color: BlackPackage Information: Package Size: 18*10*2.5cm/7.09*3.94*0.98inchPackage Weight: 50g/0.11lbPackage List:1 * Headset2 * Adhesive Tape1 * Charging Cable1 * ManualPackage List:1 * Headset2 * Adhesive Tape1 * Charging Cable1 * Manual