Front side maintenance which eliminates the maintain space for the rear screen to achieve the former maintenance, so we can makeDust and Weather proof, wide range of working temperature (-25°C 60°C), can be used in all kinds of circumstance, such as moisture, smog, storm. Features: 1.Produced in full compliance with the rules of International Sports Federations of corresponding kinds of sports. 2.Accident-free: front surface to protect sports man from injuries; top part with a special soft protection. 3.Angled LED configuration with tilted foot system for multiple setup scenarios, striking a perfect balance between live audiences and broadcast cameras. 4.Refresh rate up to 4,200 Hz, ideally for live event broadcasting. 5.High reliability with the data hot backup, to avoid any communication risk during the game. 6.User friendly: 2G bandwidth, less controlers are needed for the exceptional length. 7.EMC compliance Dust and Weather proof, wide range of working temperature (-25°C 60°C), can be used in all kinds of circumstance, such as moisture, smog, storm. Features: 1.Produced in full compliance with the rules of International Sports Federations of corresponding kinds of sports. 2.Accident-free: front surface to protect sports man from injuries; top part with a special soft protection. 3.Angled LED configuration with tilted foot system for multiple setup scenarios, striking a perfect balance between live audiences and broadcast cameras. 4.Refresh rate up to 4,200 Hz, ideally for live event broadcasting. 5.High reliability with the data hot backup, to avoid any communication risk during the game. 6.User friendly: 2G bandwidth, less controlers are needed for the exceptional length. 7.EMC compliance