Rotary Knob & Synchronized Reverse: Precise digital timer avoids repeated mechanical pressure, just turn to set the time. The numbers synchronize with the reverse in a humane way, while the timer is reversed. Time management and clear alarm: counts down from 99 min55 sec to zero and emits a clear sound at the time set. Or use it as a stopwatch to count from 0 to 99:55 to test resistance, sprint speed, etc. HD and Magnetic LCD Display: The bold white numbers on the HD LCD display black make it easier to read. Use the magnetic stick to attach the kitchen timer to iron surfaces like the freezer. Bright or dim and dimming: This timer stays in bright mode for 5 seconds then enters dimmable mode while counting down to efficient energy saving. The timer will automatically turn off 10s after pausing, just press the button to turn it back on. Wide application: The rotary timer is ideal for cooking, yoga, massage, fitness , the classroom, meetings and other activities. Non-ticking operation makes the studio more focused without distraction. Note: The data is manual measurement, please allow 1-57cm error, due to differences in light and screen, there will be a certain color difference, the specific received in kind prevail.