Amplicom Amplifyz TCL Pulse Bluetooth Enabled Alarm - Manual (Page 18)

Preference
11.2 Alarm Sound Duration: The alarm duration, which can
be set to values from 1 to 15 minutes.
11.3 Auto DST update: It will adjust Daylight Saving Time
(DST) automatically based on your i-device time zone
setting. The alarm clock will automatically “spring
ahead” 1 hour on the second Sunday in March at
2:00AM, and “fall back” 1 hour on the first Sunday in
November at 2:00AM, according to your i-device’s time
zone.
11.4 Device Version: The vibration alarm firmware version is
shown for reference.
Tap [Done] to save the setting or Tap [Cancel] to
restore the setting, and then go back to main screen.