1. diagonal size: 55 inches; 2. Screen Type: S-PVA (DID); 3. Aspect Ratio: 16: 9; 4 Resolution: 1920 * 1080; 5. Pitch: 0.53025mm (H) * 0.53025mm (V); 6. Samsung SAMSUNG original panel; 7. Support 7 * 24-hour display; 8. Brightness (typical): 700 cd / m2; 9. Contrast: 3500: 1; 10. Can degree viewing angle (horizontal / vertical): 178/178; 11 HD multimedia signal input: HDMI 1080P (1920 × 1080) 12. The downward compatible digital video signal input: DVI 1080P (1920 × 1080) 13. The color difference components downward compatible Enter: Y PB PR 14. Composite video output: CVBS (BNC) × 1 15.OSD menu display: English language switch 16. Operation: panel buttons, IR remote control 17. The voltage design: AC100 ~ 240V 18. Power: ≤ 240W 19. Standby power: ≤5W 20. Dimensions: 1213.5mm * 684.3mm * 96.6mm 21. Operating temperature: 0 ~ 50 ℃ 22. Humidity: 10% ~ 90% 23. Storage Temperature: -20 ~ 60 ℃ 24. Storage humidity: 5% to 95% 25. Housing material: metal shell 26. splicing gap: 3.5mm (after splicing gap); 27. supports third-party touch (IRTouch, PAD) product control;