Wide Applicability: The Soft Microphone Set Is Suitable For Full Face Helmet,Rally Helmet. The Hard Microphone Set Is Suitable For Half Face Helmet,Reveal The Face Helmet,Retro Helmet. Features: 1.Bluetooth version: V5.3 2.Waterproof Ipx6 3.Standby Time: About 160 hours(Dormant state lasts 18 months) 4.Intercome distance: 300M(without obstructions) 5. Lithium battery: 2000Mah 6. Playing time Up to 72 Hours in normal usage scenarios (25H music maximum volume) 7. Frequency response 100Hz~18KHz Specifications: Type: Motorcycle Bluetooth Earphone Material: Plastic+ Electric Components Battery: Built-In Polymer Lithium 3. 7v 2000mah Battery Charging Time: ≤2. 5h Call Time: 30h Standby Time: About 18 Months Bluetooth Version: Bluetooth 5. 3 Waterproof Level: Ipx6 Size: 85*35*51mm/3. 35*1. 38*2inch(L*W*H) Weight:180g/6. 35oz Net Weight:60g/2. 12oz(Bare Machine) Transmission Distance:20m(Without Obstructions) Bluetooth Identification Name Qinlife Y10 Volume Adjustment Method: Touch The Button To Adjust Storage Type Nc Charging Voltage 5v/1a Headphone Jack Typ-C Snr 78db Playing Time About 25h (Music Maximum Volume) Frequency Response 100hz~18khz Usb Specification Type-C Packages: 1*Earphone 1*Base 1*Integrated Full/Half Helmet Microphone 1*Charging Cable 1*User Manual 1*Velcro Installation Package Suitable For A Variety Of Helmet Shapes,Easy Installation