The hat does not have an alarm feature (due to the obvious drawbacks of a battery-dependent alarm). In regards to concerns regarding being able to wake up with an alarm, it is important to note that the tones do not play continuously. The Sleep Shepherd's biofeedback system is always taking in brainwave and motion data to determine your current sleep state. Should you happen to wake up during the night, tones will automatically begin to play to ease you back into sleep. The hat, however, will not prevent you from waking up due to loud and abrupt ambient sounds such as an alarm or crying baby. In addition, the tone volume is adjustable to ensure that (if you are 'half awake' in the morning and the tones happen to be on) the tones will not drown out an alarm or other emergency.