After 30 seconds of alarm, it shuts off for 10 minutes. I got this to wake me in my lightest sleep like you advertise. That isnt nearly enough to wake me. After dying it went black and woupdnt come back on even for a charging notification. I have to return my watch and wait for a new o.s update. Waste of money. The pebble time was perfect but greed got to fitbit and had to buy out anyone that made anything better than them. Too bad they cant take pointers. GARBAGE WATCH!
