Image range: 50cm to infinite, better visual effects within 5 meters, support night vision function Color adjustment: automatic Installation method: computer monitor/TV/removable stand/other Support equipment: desktop computers, notebooks, all-in-ones, smart TVs, smart camera devices (need to debug), mobile phones are not supported Compatible system: XP/Window 7/8/10, Mac OS/Android 4.0 and above Specifications: Model: A55 Drive mode: no drive, plug and play Focus method: fixed focal length Dynamic resolution: 1920 x 1080 by default Pixel: 200W hardware pixel Image display frame number: about 30 frames Lens angle: about 90 degree wide angle LED: Support not only contact switch Microphone: Built-in digital microphone Pickup distance: better pickup within 10 meters Cable length: 1.5 meters non-detachable cable Power interface: USB interface Input voltage: 5V Video compression format: default MJPG