Interval Timer

This interval timer can be applied to study, fitness and workout as well as meetings, presentations and other situations.

Example
For study: use to perform a cycle of 25 minutes of study and 5 minutes of rest alternately.

Training: training like 20 seconds of exercise and 10 seconds of rest (general Tabata training)

Conference presentation: Ring one bell 10 minutes after the start, two bells 5 minutes after that, and three bells to indicate the end of the presentation after another 5 minutes.