Your watch will make a long beep every hour. To remind you the time.
Step 1: Requirements
A digital wrist watch chime mode workable.
Step 2: Follow Images
Press mode 2 times
Press st/stp 3 times
press mode again
Step 3: Boom
You have chime mode enabled. This will help you to get the time without looking into your watch. It helps me a lot at exam times.