Silent LED Classroom Timer

This digital countdown timer features a large, high-contrast LED display with white numerals on a black background for exceptional readability. It measures 3.5 x 2.4 x 1.2 inches and weighs 180g. The device supports countdown from 99 minutes 55 seconds down to zero, or count-up timing up to 99:55 as a stopwatch. It is constructed with a durable ABS plastic body, backed by strong magnets and an upgraded silicone anti-slip pad (protective film must be removed before use). Two adjustable brightness levels — bright and energy-saving — adapt to daylight or low-light environments. Volume is fully adjustable, and operation is silent — no ticking sound. Power saving mode activates automatically 5 seconds after pause or stop; press the screen button to wake it instantly.