THE DEMO UNIT IS IN PERFECT OPERATING CONDITION.SALES ON DEMO UNITS ARE FINAL AND CANNOT BE RETURNED. 3 Months Local Warranty. Laser Light Source with life span up to 30,000 hours. Bright 3,000 lumens and stable output, achieves 2,500,000 : 1 Contrast. Amazing Color for spectacular and accurate colours. Full 4K, 8 million pixel display, perfect pixel alignment and great contrast. HDR 10 & HLG Supported for Brightest Whites, Deepest Darks, and Lifelike Colors eARC (Enhanced Audio Return Channel) for higher-quality audio experience Superb Gaming Experience with 240Hz refresh rate and extremely low 4ms Input Lag for PC gaming Auto detect and display Super Ultra Wide 21:9/32:9 screen for immersive panoramic view Smart Home with Optoma Marketplace, File Manager, Creative Cast App, and more Easy installation with 4-corner adjustment, 2D keystone correction, and warping. Entering the new generation of home entertainment with UHZ50. With DuraCore Laser technology, UHZ50 is able to deliver longer-lasting and excellent performance at true 4K UHD resolution with high brightness at 3,000 lumens and 2,500,000:1 contrast. UHZ50 also comes with the upgraded Smart Home features including Optoma Marketplace, File Manager, Creative Cast, and connectivity with voice assistants, offering the comprehensive home entertainment experience. With the ability to implement 4-corner adjustment, 2D keystone correction, vertical lens shift, powered 1.3x zoom, and warping at 3*3 matrix, UHZ50 is also perfectly easy to install in any room at home, or to create a simulation scenario. Specifications Display TechnologyDLP 4K UHD chip Native Resolution4K UHD (3840 × 2160) Brightness3,000 Lumens Contrast2,500,000:1 Light SourceLaser Light Source Life30,000 hours (Eco mode) Throw Ratio1.21 – 1.59:1, ±3% Zoom Type1.3x Manual Keystone Correction±30° Vertical, ±30° Horizontal Lens Shift105%~115%, vertical I/O ConnectorsHDMI x 3, Audio out, USB-A x 3(FW upgrade/multi-media reader/ WiFi / power) RS232, 12V trigger, S/PDIF, 3D sync, RJ45 Speaker (Watts)10W x 2 Weight (Kg)4.8 ±0.3 Dimensions (W x D x H) (mm)337(W) x 265(D) x 108mm(H) (w/o feet), 337(W) x 265(D) x 122.5mm(H) (w/ feet) Aspect Ratio16:9 Projection Screen Size34.1" – 302.4" Projection LensF# 1.94~2.23, f12.81~16.74mm Uniformity80% Horizontal Scan Rate31~135KHz Vertical Scan Rate24~120 Hz Displayable Colours1073.4 million colours (10 bit) Noise Level26dB (Eco mode) Power Supply100V ~ 240V ± 10%, 50-60Hz Power Consumption