Optoma projektor HD28e (DLP, FULL 3D, 1080p, 3 800 ANSI, 30 000:1, HDMI, 5W speaker)

Display technology DLP
Resolution 1080p Full HD (1920×1080)
Brightness 3,800 lumens
Contrast ratio 30,000:1
Native aspect ratio 16:9
Aspect ratio – compatible 4:3
Keystone correction – vertical +/-40°
Uniformity 80%
Screen size 0.71m ~ 7.65m (28″ ~ 301″) diagonal
Light source type Lamp
Lamp watts 240
Lamp life hours (up to) 4000 (Bright), 15000 (Dynamic), 10000 (Eco)
Throw ratio 1.47:1 ~ 1.62:1
Projection distance (m) 1m – 9.8m
Zoom 1.1
Zoom type Manual
Focal length (mm) 15.59 ~ 17.14
Native offset 116%

Connections
Inputs 1 x HDMI 1.4a 3D support
Outputs 1 x Audio 3.5mm, 1 x USB-A power 1.5A
Noise level (typical) 25dB
PC compatibility FHD, UXGA, SXGA, WXGA, HD, XGA, SVGA, VGA, Mac
2D compatibility NTSC M/J, 3.58MHz, 4.43MHz PAL B/D/G/H/I/M/N, 4,43MHz SECAM B/D/G/K/K1/L, 4.25/4.4MHz 480i/p, 576i/p, 720p(50/60Hz), 1080i(50/60Hz), 1080p(50/60Hz)
3D compatibility Side-by-Side:1080i50 / 60, 720p50 / 60 Frame-pack: 1080p24, 720p50 / 60 Over-Under: 1080p24, 720p50 / 60
3D Full 3D

Security
Security bar, Kensington Lock, Password protected interface
Operating conditions 5°C ~ 40°C, Max. Humidity 85%, Max. Altitude 3000m
Speaker count 1
Watts per speaker 5W