1. Panel Size of advertising lcd display: 55 inches

2. Resolution: 1920*1080 or 3840x2160

3. Brightness: 350~3000cd/m²

4. Aspect ratio: 16.7M

5. Response time: 6.5ms

6. Contrast: 4000:1

7. View angle: 178°/178°

8. Touch Type: infrared or capacitive or no touch

9. System: standalone or android or windows

10. Audio/Speakers:2 x 8Ω10W Speakers, 1 x 30W Amplifier

11. PC I/O connectors: USB 3.0, 2 x PS/2, 1 x RJ45, 1 x line-in, 1 x earphones, 1 x microphone, 1 x VGA

12. Network: built-in Realtek RTL8103EL

13. Audio: built-in HD audio 8 (Realtek ALC888) audio system

14. Wi-Fi and 4G function: optional

15. Support language: Chinese, English, Spanish, Russian, German, French, Arabic and more

16. Support formats: MPEG1/2 4, AVI, RM, WMV, DAT, JPEG, BMP, PPT, Word, EXCEL, TXT, MP3, RMVB and more

17. Combined media display: support video, picture, FLASH, marquee text and other combined media display.

18. Playback function: support play list control, program playback sequence, circulating playback function.

19. Operating temperature: ~10 to 45°C

20. Storage temperature: -20 to 60°C 

21. Humidity: 20-90% RH at 40°C

22. System power supply: AC 110 - 240V, 50/60Hz

23. TFT panel grade: 100% new

24. Display panel brand: Brand new

25. Product cover: cold rolled steel with power coating on back + aluminum alloy on sides + toughened glass in front

26. Package: Carton inside + wooden case outside

27. Product colors: white/black/silver/customized color

28. Warranty time: 1 year

29. CE/ROHS/FCC etc certifications