Water Drop - V50 Aromatherapy Machine Raindrop Mode Timer Auto Shutdown.This aromatherapy machine is as cute and pretty as it is functional. With 7 lighting choices, Raindrop Mode, Timer, and automatic shutdown without water, you're sure to find a setting that matches your mood, plus, with the convenient remote control, you can change your mind and change the setting from across the room. You can set the time for 2, 4, or 8 hours so you can set it and go to sleep without worry.