【Hi-Fi Stereo Sound Quality,Louder,Noise Reduction】:You can enjoy the best Hi-Fi stereo music,GPS from the motorcycle Bluetooth headset with professional sound decoding chip,40MM diameter and 0.3 watt helmet speakers units that have high quality sound effect and louder volume.Also it adopt ENC (Environmental Noise Cancellation) technology and microphone that make calls clearer. | 【Large Battery Capacity and Easy to Use】:The helmet headphone use professional headphone batteries for long-lasting battery life. The keys are designed to protrude,enabling accurate usage even while wearing gloves.Single-hand to achieve volume increase or decrease, song switching,double-click minus sign key to start the voice assistant, double-click function key to automatically dial back. | 【Stable and Fast Signal Transmission】:The helmet speakers use the latest 5.2 Bluetooth version has the following improvements:Stronger compatibility,can be paring with most Bluetooth devices such as phone,navigator,GPS.Quick pairing.Reconnect automatically.Signal stability.Low power consumption.30 meters connection distance.Incoming calls are automatically announced and answered. | 【Easy Installation and IPX7 Waterproof】:Perfect helmet speakers headphone for full helmet,uncovered helmet,half helmet.Simply attach the headset to the headphone hole reserved in the helmet to complete the installation.The helmet speakers use IPX7 waterproof technology that can handle the bad weather conditions. | 【Auto Answer,Voice Assistant,Smart Connection】:The motorcycle helmet speakers can automatically answer call in 10 seconds,make your ride safer and easier.You can easily activate a voice assistant or Siri to perform a variety of tasks without taking your attention off the road by double-click minus sign key to start the voice assistant.Also it can connect two phones at the same time. | 【Installation Tips】:Please check your helmet to see if there is a reserved helmet speakers space before purchasing.If there is a reserved space,attach the helmet speakers to it via Velcro,run the wire behind the padding.If there is no reserved space,you may need to cut a hole in the helmet lining to install the motorcycle Bluetooth headset. | 【For motorcycle friends】: The motorcycle helmet Bluetooth headset is a product with good sound quality, strong endurance, simple to use and has a strong cost performance. If you only need a good quality, simple and easy to operate helmet speakers, this one is your best choice. | 【How to Adjust the Volume】: 1. Press and hold the volume button + to increase the volume. 2. Prior to riding, you can adjust the volume using your mobile phone. 3. Ensure that the speakers are positioned close to the ear within the helmet,while avoiding obstruction from the helmet lining.