Product description: Private mold customization, comfortable fit: private mold design, precise customization according to the ear canal structure, comfortable and stable to wear, no pressure for long-term riding, suitable for use with safety helmets of various head shapes. IPX5 waterproof and sweat-proof: professional waterproof technology, effectively resists rain, sweat and dust, no fear of bad weather, and ensures uninterrupted calls and music during riding. noise reduction, clear calls: equipped with noise reduction technology (ANC), intelligent filtering of wind noise and engine noise, high-definition microphone enhances human voice, clear and smooth calls during multi-person intercom, and more efficient team collaboration. dual-ear interconnection, stereo experience: true wireless design, dual-earphone intelligent interconnection, providing immersive stereo sound effects, supporting one-click switching of music/intercom, riding and entertainment. Super long battery life, worry fast charging: large-capacity battery with low-power chip, single battery life of 8-10 hours, with charging box can be extended to 30 hours, support fast charging function, charging for 15 minutes to listen for 2 hours. Package includes: 1 pcs motorcycle helmet bluetooth headset