Features: Ambience light BT headset, the host can switch 4 light colors independently. It's more cool to turn it on at night. Turn on the atmosphere light with one key, so that you can become the most attractive person in the street. The latest 5.2 version of BT chip, with faster speed, stable performance quality, low energy consumption, long endurance and intelligent noise reduction. IP67,The structure is deeply waterproof, which will not damage the internal electronic components even in the rain. It can be used all day 2800 Ma large capacity battery, 170 hours of continuous playback, 2 hours of fast charging, 900 hours of endurance. Intelligent noise reduction, which can recognize human voice and environmental noise, and improve voice clarity. There is no noise when riding at a speed of 100-120. Automatic answering and manual answering can be selected without taking out the mobile phone Specifications: Hard wheat (suitable for full helmet, half helmet and uncovered helmet) Waterproof grade:IP67 BT version:5.2 Sensitivity:96db Material: ABS + silicone Battery capacity: 3.7V / 1800-2800mah Transmission distance: 30m Charging time: 2-3 hours Working time: 170 hours Package Size:13x9.7x5.9cm Package weight:190g Package List: 1xMachine 1xInstruction 2xWindproof cotton 1xSpeaker microphone 4xHorn adhesive 1xUSB