How to Use Your Smart Watch or Fitness Tracker as a Silent Alarm Clock | How to Geek

When you need to wake up without disturbing everyone around you a silent vibration-based alarm clock is just the ticket. Many smartwatches and fitness trackers have just such a feature built-in and you can easily take advantage of it with just a few settings tweaks.

Source: How to Use Your Smart Watch or Fitness Tracker as a Silent Alarm Clock