The alarm doesn't actually stop when it's left alone for 3 minutes. Like most alarm clocks, the Mudita Bell 2 has a snooze feature.

Automatic Snooze

Snooze will trigger automatically if the alarm rings and the user does not interact with the device within 3 minutes. After another 10 minutes, the alarm will start ringing again.

This process will repeat 3 times if the user still doesn't interact with the clock. After 3 automatic snoozes, the alarm will finally stop ringing.

Control Snooze Manually

The user can also manually activate snooze by light-clicking or twisting the main knob on the top of the clock.

The snooze time is always 10 minutes and cannot be changed by the user.