Rose Bath Glows Set of 3. Water Activated Floating Bath Lights. Relaxing Water activated LED lights Replaceable batteries (included) 3 Roses included in each pack To insert the batteries use a coin to unscrew the battery compartment in the base of each rose Batteries must be inserted positive side down, x3 batteries per rose The Rose Bath Glows are water activated so the base must be in contact with water to switch the LED on