1.Professional use for indoor and outdoor various events. 2. Exquisite design with die-casting aluminum, slim, thickness only 65 mm, super lightweight 6.5 kg for unit cabinet of 500x500mm, fast lock, easy and quick to assemble and disassemble. 3.Scientific cabinet size of 500x500 mm, can build any sizes freely according to the different needs of events. 4. The SMD (3-in-1) LED package provides wider viewing angles and extremely close viewing distances. 5.Advanced video processing produces crystal-clear, detailed images with smooth motion reproductions. Series: Magic Product code: M3.91 HD-O-R Pixel pitch:3.91 mm LED Chip: Nationstar SMD1921 (The best quality) Resolution: 65,536 dots/m2 IC: Macroblock MBI 5124(Worlds Top Brand) Refresh rate: 1920 HZ Brightness: 6500 nits (adjustable) Viewing distance: 1 meter ~500 meters Lifespan: 10 years Unit panel size: 500x500 mm and 500x1000 mm optional Huaxia Display Co., Ltd. is the worlds leading producer of large-format LED displays. Publicly traded company, financial stable ! CE, EMC,RoHS,ETL,FCC,ISO 9001,ISO14001 compliance. Keeping your budget in mind and delivering excellent return on investment, choosing a Huaxia LED video display means you are choosing wholesale price, excellent return and reliability for you.