1. Using the latest materials for processing2. Soft microphone.3. The adhesive earplugs、 torn white plastic bags、 then it can be directly attached to the helmet interior.4. High-quality thicker headphone cable5. The sound quality is good、 stereoscopic Color: blackMaterial: ABSHeadphones diameter: about 43mmMicrophone: YesInterface: 3.5mm 1 x Motorcycle bluetooth intercom headset1 x Brackets2 x Screws