During everyday use, Timesulin shows how much time has passed since the last injection
 
For the first hour the display indicates how many minutes and seconds have passed in this format: MM:SS. You will know you are looking at MM:SS if you see the seconds counting up each second that passes.

After sixty minutes, the timer will automatically switch to show how many hours and minutes have passed in this format: HH:MM

The Timesulin timer counts up to 99 hours and 59 minutes, at which point it will pause, showing 99:59 until you remove the cap for longer than 8 seconds, resetting the timer back to 00:00 and activating the timer when you click it back into place on your insulin pen.