[Product] for: outdoor use, with an area of ??more than 5 square meters LED display, widely used in squares, buildings and other outdoor venues, suitable for playing all kinds of advertising. [Features]: P4 indoor full color LED display with high-quality materials and professional technology, this type of LED electronic display has: high brightness, waterproof sunscreen, stable performance, clear picture quality, strong colorful, three-dimensional sense of depth, long life, energy saving and other features! Good P4 indoor full color LED display quality by ISO9001 and CE certification, the products affordable by the majority of customers, selling more than 80 countries and regions. P4 indoor full color technical parameters: Pixel pitch (mm): 4mm Pixel composition: 1R1G1B Screen Brightness (cd / m2): 170W average power (W / m2): 110W screen density (dots / m2): 2500dots viewing distance (m) : 10m-300m LED drive mode: Constant current display color: 17M ~ 69G color brightness adjustment: 256 brightness level gamma correction: 256 to 4096 refresh frequency: 300 ~ 2440 / sec Frame rate: more than 60HZ Display Interface: VAG + DVI display card life: 100,000 hours