Useful apps and features
Deleting clocks
Tap 
→Select, select clocks, and then tap 
.
Stopwatch
On the Apps screen, tap Clock →Stopwatch.
Tap START to time an event. Tap LAP to record lap times.
Tap STOP to stop timing. To clear lap times, tap RESET.
Timer
On the Apps screen, tap Clock →Timer.
Set the duration, and then tap START.
Drag 
outside the large circle when the timer goes off.
Calculator
Use this app for simple or complex calculations. Tap Calculator on the Apps screen.
Rotate the device to landscape orientation to display the scientific calculator. If Screen rotation is disabled, tap 
→Scientific calculator.
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