Fangrui Product Details 1. L850 Foldable Enc Noise Reduction Wireless Bluetooth Earphone With Microphone 2. Bluetooth Version: V5.1 3. Battery Capacity: 400mah 4. Working Hours: 8-12h 5. Standby Time: 120h 6. Transmission Distance: 10 Meters 7. Bluetooth 5.1 Chip, High-speed Transmission Is One Step Faster, No Delay, Smoother Watching Movies And Games, And More Stable Signal 8. Rbg Lighting Effect, Dazzling E-sports Atmosphere 9. High-fidelity Composite Diaphragm, Better Sound Quality 10. Lightweight Body, Comfortable And Stress-free To Wear 11. Upgraded Large Battery And Low-power Smart Chip To Bring Super Long Battery Life Experience 12. Foldable Design, More Flexible For Carrying When Going Out 13. Multiple Bending Tests, Durable, Metal Arms Are More Durable 14. Compatible With Multiple Modes, Bluetooth + Sd Card + Plug-in Cable 15. Packing List: Bluetooth Headset X1, Type-c Charging Cable X1, Aux Audio Cable X1, Plug-in Microphone X1, Chinese And English Manual X1