1. Display technology: 3LCD 2. Light source: laser diode 3. LCD panel size: ≥0.64" 4. Color brightness: ≥7200 lumens 5. Resolution: 1920×1200 (standard) 6. Contrast ratio: ≥5000000:1 7. Uniformity: ≥90% 8. Lens parameters: F: 1.5-2.08, f=17.2-27.7, 1.6x zoom, projection ratio: 1.22-1.98 9. Light source life: ≥ 20,000 hours in positive mode, 30,000 hours in economic mode 10. Lens displacement: vertical lens displacement 0-60%, horizontal lens displacement ±29% 11. Trapezoidal correction: vertical trapezoid correction ±30°, horizontal trapezoid correction ±30°, curved surface, pillow, barrel correction, 6-point and 4-point multi-point correction 12. Power of the whole machine: 370 watts, <0.5W in economic standby 13. Speaker: ≥16 watts 14. Input interface: VGA*1, Audio in (minijack, 3.5mm)*1, Video*1, HDMI*2, USB- A*1, USB- B*1 (displayable), RJ45*1 (displayable), HD BaseT ( Optional); Output interface: VGA*1, Audio out (mini jack, 3.5mm)*1, control port: RS232*1, RJ45*1, USB- B*1 15. Net weight of the machine: 8KG 16. Have 26 countries