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★ Widely used in football matches to remind substitute athletes or injury stoppage time, super bright LED display, clear and visible 60 meters away.
★ Built-in safety polymer lithium battery; rechargeable; need to be fully charged in 3 hours and work for more than 3 hours; according to the normal frequency, a full charge can be used for more than 12 times in a football game.
★ It can be red and green when used outdoors, with high brightness, This LED substitution board allows display numbers from 00-99, A great additon to the equipment of any referee, It can be seen directly in the sun.
★ We have 3 standard sizes, 8/10/12inch to choose from, with high safety performance and light weight.
★ Suitable for indoor, semi-outdoor and outdoor use; pure aluminum frame structure, can work normally in rainy days, but not in water.