Fangrui Product Details 1. Wupp Cs-1412a1 Bluetooth 5.1 S2 Motorcycle Helmet Full Duplex Bluetooth Intercom Headset Earphone(blue) 2. Bluetooth Version: Qualcomm Csr 5.1 Bluetooth Chip 3. Play Time: 22 Hours Or More 4. Standby Time: 400 Hours 5. Charging Time: About 2.5 Hours 6. Charging Interface: Type-c Android Phone Plug 7. Power Requirement: Charging Requirement 5v1a 8. Fm Support Range: 87-108m 9. Installation Method: Clip Installation, Hook And Loop Fastener Installation 10. The Product Adopts Bluetooth 5.1 Chip, Which Is More Power Saving, Low Latency, No Noise, Realizes Stable Audio Transmission, Supports Pairing With Most Other Brand Bluetooth Intercom Headsets And Ordinary Bluetooth Headsets On The Market 11. The Product Adopts Cvc8.0 Double-meter Noise Reduction, Dsp Software Algorithm Intelligent Quadruple Noise Reduction, Which Can Ensure The Quality Of The Call When Using At High Speed; Equipped With 2in1 Soft And Hard Labels And Double-mark Noise Reduction Function, The Noise Reduction Effect Is Better 12. The Intercom Distance Can Reach 800-1000 Meters, When The Bluetooth Hands-free Answering The Phone, The Distance Is More Than 20 Meters, Can Support Three People To Connect, Two People Full Duplex Intercom (can Carry Out Two-way Signal Transmission At The Same Time) 13. The Product Can Be Connected To Two Mobile Phones At The Same Time To Realize The Control Of The Basic Functions Of The Mobile Phone, (receiving Calls, Playing Music, Receiving And Fm); Automatically Answer The Phone, If You Don't Want To Answer, You Can Press The Button To Reject Or Hang Up, And Then Redial The Last Code ; You Can Also Switch Freely Between Phone, Bluetooth Intercom, And Stereo Music 14. The Product Uses 800mah Super-capacity Rechargeable Polymer Lithium Battery, Talk Time 22 Hours, Standby Time 400 Hours; Support Ios, Part Of The Android System Headset Power Display, Check The Power Anytime And Anywhere, At A Glance; You Can Also Use It While Riding Use, While Charging, Realize The Correct Charging And Use 15. The Product Design Is Ip67 Waterproof, Even If