product description【Product Specifications】Product net weight: 1650 gramsFeatures: High Strength, Light Weight, Shock Resistant, Smooth, Breathable, Bluetooth.Helmet material: ABS engineering helmet body is of high quality, excellent performance, very strong and stable. The interior adopts high-density EPS foam, which can be used as a buffer layer and has strong shock absorption.Double-layer sun visor: PC material, adjustable, UV-resistant, wear-resistant.Lining: Removable, washable, waterproof and quick drying lining for all your long journeys.EU: ECE R 2205 certifiedUSA: DOT, FMVSS-218 standardCertificate [Bluetooth function]1. GSR Bluetooth version 5.02. 1200mAh large capacity battery3. 80 hours standby, 20 hours listening to music4. Stereo, stereo subwoofer, dynamic music surrounds the ear5. No need to press keys, answer the phone automatically6. Waterproof design, worry-free in rainy days7. Excellent noise reduction design8. FM function makes driving fun9. Hidden microphone design, more beautiful!7. Noise reduction ability (km/h): more than 120 per hour【Package list】1* Modular helmet1 bluetooth headset