Technical Specifications:
Video Resolution: 3840x2160(support: 3840x2160, 1920x1080, 1280x720, 640x480 etc.)
Photo Sensor Type: 1/3.2” Sony CMOS Sensor
Record Transmission Rate :4K@20fps, 1080P@30fps.
Capture Voice Range:8M/26ft
USB Cable Lenth: 1.8M/6ft
Wide Angle View :75-degree
Lens: optics glass lens
Focus Type: fixed focus
Focal length: 0.5m to 2.5m.
Video encoding: mjpg, Yuv.
Easy to use: 3.0/2.0/1.0 USB Plug and Play
This is an excellent ultra HD 4k webcam,faster,smoother ,richer colors renderingand works on more device.

Package Includes:
1 x HD Webcam
1 x Manual
1 x Tripod
1 x Cover
1 x Box

Tip: The surface of the camera is covered by plastic film, please tear it off before use
If you are unable to access Windows 10's preinstalled Skype with this 4K webcam, please go to the Skype official website to download the desktop version.
Make sure that you plug the webcam directly into your computer, NOT a USB hub. USB hubs are often too underpowered to operate a webcam.
If you're using a Mac, you'll most likely need to buy a USB to USB-C adapter in order to fit a normal webcam.
If your webcam's microphone isn't working, you need to disable the built-in camera or microphone of your PC itself on device manager, then enable the webcam's microphone.
For desktop, it is recommended that customers use the USB interface on the back of the computer, the stability will be better.
The default setting of some video software is 480P or 720P, so it will cause a bad webcam experience, you can set the resolution of the corresponding software.