The Alphatron Broadcast Electronics EVF-035W-3G Electronic Viewfinder features a 3.54″ LED-backlit LCD and displays 24-bit RGB at 960 x 640 resolution in a 16:9 aspect ratio. Brightness is at 500 nit and contrast ratio at 1000:1. The viewing angle is 160 x 160degree. The unit comes equipped with an adjustable diopter and a manual lens shutter for protection of the LCD. Connections consist of SDI and HDMI inputs and outputs, a phone jack for calibration and a USB port for software upgrades. You can loop out from both SDI and HDMI and perform conversion out from HDMI to SDI. Adjustable features include Brightness, Contrast, Color Temperature, Sharpness, various Scan modes, Markers, User Aspect Zoom and Blue Gun. Professional features available are 3G Level A/B, Audio Meter, Time Code, Range Error, Zebra, Luma y’ Zone Check, Focus Assist and Internal Color bar and Pluge Pattern. The viewfinder has lightweight magnesium housing and can be powered by battery or via an included DC power supply.