1、12 Languages Supported: Digital door viewer supports English, Chinese, Russian, French, Italian, German, Japanese, Korean, Czech, Turkish, Arabic. 2、Night View Function: 2.8in visual doorbell has low light super night view function, no light, no sense, no heat, and it will not be exposed and captured at night. 3、High Definition Screen: Peephole door viewer adopts a 2.8inch high definition screen with a novel angular appearance, 10x zoom, and infinite focusing. 4、90° Wide Angle: The high definition door viewer supports a viewing angle of 90° for a clear view of the surroundings. 5、Easy to Install: HD screen peephole viewer is easy to install, screws +3M tape, non destructive testing assembly. Item Type: Digital Door Viewer Material: Plastic,Electronics Viewing Angle: 90° Wide Angle Infrared Night View: Support Screen Size: 2.8 Inches Camera: 300,000 Pixels Screen Resolution: 320 x 240 Built-in Memory: 8M Automatic Screenshot Function: Support Applicable Door Size: Door Opening Diameter:Approx. 14-22mm / 0.6-0.9in Door Thickness:Approx. 35-120mm / 1.4-4.7in Power Supply: 4 x AAA Batteries (not Included) 1 x Host 1 x Handset 1 x Screw Pack 1 x User Manual