Interval Timer/Cycle Timer: It can set the timing of a single group or two groups, acting as an interval timer (applicable for Pomodroido). Maximum 99 hours, 59 minutes, and 59 seconds. Perfect for HIIT fitness routines and general strength training. Rechargeable and Luminous Timer: The kitchen timer is rechargeable via USB cable, so you don't have to worry about changing batteries. This workout timer with a luminous function allows you to easily read the data in the dark night, making fitness, workouts, and training more accurate. Vibration/Flash/Loud Alarm: There are three alarm modes, including vibration, flashlight, and loud alarm. You can choose to turn off the vibration or adjust the volume (choose from high, low, or silent). Ideal for people with hearing or vision problems. Clock and three alarms: This digital student timer comes with a 24-hour clock and three alarms. It's the perfect timer for students to manage their time and improve their study efficiency. It features an on/off and memory function; the timer saves the last set time as a memory time.