Fangrui Product Details 1. C20 Hd Intelligent Noise Reduction Mini Recorder With Otg 2. Features: 3. High-definition Sound Quality, Restore The Real Sound 4. Intelligent Noise Reduction, Using Smart Chip, Good Performance, Low Power Consumption, Isolate 500 Kinds Of Environmental Noise 5. With Otg, You Can Directly Connect To The Mobile Phone To Listen To The Recording 6. Automatically Save When Low Power To Prevent File Loss 7. Name In Time Format When Recording, Convenient For Organizing And Finding Files 8. Ergonomic One-handed Operation Design, Easy To Use 9. Product Parameters: 10. Chip: Action 2157 11. Input Voltage: 5v 12. Working Current: 6ma-7ma 13. Recording Format: Mp3wav 14. Number Of Recording Files: 999 15. Memory Card Type: Tf Card 16. Number Of Microphones: Bidirectional 17. Interface: Type-cusb-c 18. Battery Capacity: 300mah 19. Charging Time: About 3 Hours 20. Recording Time: About 45h 21. Playback Time: About 40h 22. Switch Position: 2nd Gear 23. Product Size: 60 X 35 X 12mm 24. Product Net Weight: 70.4g 25. Packing List: 26. -recorder X 1 27. -wired Headset X 1 28. -data Cable X 1 29. -lanyard X 1 30. -instruction Manual X 1