Our versatile premium digital clock timer features accurate countdown and countup stopwatch functions, can also be used as a clock to display the time of day (24-hour format), and has an alarm function, allowing you to easily track time Intuitive five-button operation allows you to quickly program and launch timing applications. Countdown or up to 99 hours 59 minutes 59 seconds. Repeat cycle continues automatically until stopped When time is up, the timer will sound an alarm for one minute. Vibration, flashlight, and loud buzzer sound alarms can run simultaneously. Vibration can be turned on/off, and the sound can be adjusted to high, low, or silent Built-in magnetic back for metal surface attachment, hook and retractable base bracket for table or counter, giving you multiple mounting options. Large screen with clear numbers for better viewing Requires two AAA batteries (not included). Ideal timer clock for lab work, homework, office, exercise, meeting, baking, cooking, workout, classroom activities, and other repetitive timing applications