H81 HD WiFi Recording Night Vision Voice Recorder Noise Reduction Audio Recorder Device 1. WiFi recorder with point-to-point WiFi, app mobile real-time viewing 2. HD 1080P, a key recording, video, photo, support for charging and recording, cycle coverage, maximum support for 256GB (card not included), with infrared night vision supplemental light 3. With a lanyard, can be hung on the chest 4. With a back clip, can be adjusted positively and negatively, clip clothing pockets, schoolbag belts, waist, etc. , easy to carry 5. Suitable for meeting training, outdoor hiking, cycling, classroom recording, running sports, interview recording, business negotiations 6. Can be fixed with a bracket, connected to the computer as a webcam Specifications: 1. WIFI program: Roadcam 2. Video format: AVI 3. Video resolution: 1920*1080P 4. Video frame rate: 30FPS 5. Image format: JPG 6. Pixel: 4032*3024 7. Image ratio: 16:9 8. Interface type: Type-C USB 9. Charging time: 3-4 hours 10. Usage time: battery capacity 1200 mAh, 6 hours of recording alone, 8 hours of recording alone 11. Operating system: for iOSAndroid, windows 7 or above 12. Image sensor: 14 inch CMOS sensor 13. Minimum illumination: 0. 3～0. 5Lux (color mode), 0Lux (black and white mode) 14. Viewing angle: 90 degree diagonal 15. Night vision: automatic switching of lens sensitivity, 6 940nm SMD infrared lights, illumination distance of 3 to 5 meters 16. Compression standard: AVI 17. Code rate: CBRVBR two code rate control modes, and the output code rate range is 128~4096kbps 18. Image adjustment: brightness, contrast, saturation, and hue are adjustable 19. Input: Built-in -38dB microphone 20. Output: None 21. Sampling frequencybit width: 8KHz16bit 22. Compression standardcode rate: ADPCM32kbps 23. Alarm detection: red and blue warning lights 24. Rated voltage: DC5V +- Five percent 25. Power consumption: 150-170ma 26. Working environment: working temperature: -10～50 degree centigrade, working humidity: Les