Model - ViewSonic LS820, Type - Ultra-Short Throw Laser Projector, Throw Ratio - 0.23, Resolution - 1920 x 1080, Max. Supported Resolution - 1920 x 1080, Image Size - 70\ inch - 150\ inch, Contrast Ratio - 100000:1, Native Aspect Ratio - 16:9, Zoom Ratio - Digital, Light Output (lumens) - 3500 lumens, Light Source Life (Hours) - 15000/20000 Hours (Normal/Dynamic Eco), Projectoion Lens - Digital optical focus, Display Type - DLP, I/O Ports - 2 x RGB, 1 x Composite, 1 x S-video, 1 x Component, 1 x HDMI, 1 x HDMI MHL, 1 x LAN, 1 x RS232, 1 x 3D VESA, 1 x 12V Trigger, 1 x Mini USB, 1 x SB Type A, 1 x Micro USB, 1 x 3.5mm Audio in, 2 x RCA Audio in, 1 x Audio out, 1 x RGB out, Keystone Correction - +- 30 Degree (Vertical/Horizontal), Speaker - 8W x 2, Features - Long-lasting laser phosphor light source (20,000 hours), Full HD 1080p resolution, Large images in small spaces (Ultra-Short throw), Ultra-high contrast ratio, 30% wider color range than LS810 and LS830, SuperColor, Sonic Expert, Weight - 10Kg, Others - Dimensions (WxHxD): 508 x 392 x 165mm, Noise (Eco): 28dB, Color Range: R,G,B, Warranty - 2 year (Lamp 1 year)