Feature: 1. Bone Conduction Resonator: Distributed sound achieves 360° high sound quality through the medium, freeing hands, wireless communication, and safe riding. 2. Motorcycle Headset: Specially designed for outdoor motorcycle riding, bone conduction open ear listening, keep alert and safe during outdoor sports, making your outdoor riding more exciting. 3. IP68 Waterproof: The enclosed sound cavity and nano waterproof coating reach IP68 waterproof and dustproof grade, even in rain and snow, it will not affect the use. 4. High Quality Music and High Definition Microphones: Bone conduction transducers provide close to natural audio sound, and high definition microphones can withstand up to 60 speed wind noise. 5. Application: It is suitable for any use scene that needs to wear a helmet, such as: riding a bicycle, motorcycle, and skiing. Answer the phone, perceive the external environment and enjoy music. Specification: Item Type: Bone Conduction Helmet Headset Material: ABS Wireless: BT 5.0 Wireless Range: ≥10 Meters Frequency Response Range: 20H-20KHz Support Protocol: HFPV1.7 A2DPV1.3,1 AVRCPV1.6 HSPV1.2 Battery Type: Built In 400mAh Lithium Battery Playing Time: About 8 Hours Talk Time: About 9 Hours Standby Time: About 300 Hours. Package List: 1 x Headphone1 x Microphone1 x Data Line2 x Chinese and English Manual1 x Hole Plug3 x Sticker1 x Card Line Device