Features:1. The high-definition mirror refracts a little light and shadow, with a silver rotating shell, to convey the visual rhythm, frequency and rhythm without elements, cool and fashionable, smart and restrained2. Precision electronic timer, avoid repeated mechanical pressing every 5 seconds, quick adjustment3. Large mirror high-definition digital display, standing or sitting, the numbers are clear at a glance4. Silent digital display timing design, silent walking, more relaxed learning and more focused work5. Three-level timing reminder, adapt to different environments and sound volume needs6.00:00-~99:55 adjustable range, support broadcast positive and negative dual timing, easier to measure time7. It is easy to be adsorbed on metal surfaces such as blackboards and refrigerators, and it is firm and not afraid of falling off. Note:Actual colors may differ slightly from images due to different monitors and lighting effectsDue to manual measurement, please allow 1-3cm deviation Description:1. Name: Spin Countdown2. Material: ABS3. Color: Black4. Working voltage: 4.5V (3 AAA batteries, this product does not contain batteries)5. Working temperature: 0c-50C Timing range: 99 minutes 55 seconds6. Volume file: mute 0db/low volume file 60-70db high volume file 80-90db7. Product size: 7878*27.5mm Countdown Settings1. Turn the knob to set the desired countdown time, press the mirror to start the countdown(Rotate to the right to increase the value, and rotate to the left to decrease the value. If the angle is greater than 60 degrees, the fast rotation is the set minute, and the average speed is less than the set second of 60 degrees) Timing settings1. After setting 00:00, press the mirror to start timing (press and hold for 1 second when the timer is paused) Includes:1*Stopwatch