When unit is on, press the power button once to activate the 15 min timer. Press the power button twice for the 30 minute timer. Press the power button 3 times for 60 minutes. Press the power button 4 times to turn the timer off.
*Pro tip – not seeing what timer option you’ve selected? Release the silicone strapped if it’s wrapped around the sound machine and you’ll see a light illuminated under which timer setting you’ve selected.