Bilik Shower Wall Clocks (Set of 2) - Water Resistant Colorful Fun Childrens Bathroom Accesssories - Blue & Green Clock is big enough to see from anywhere in shower and small enough to not encumber space. Each clock measures 3"x3"x1" and uses 1 AAA battery for long life. (Batteries included). Wet the back side suction cup; press firmly against shower wall and clock will adhere. Water resistant plastic and silicone casing keeps clock water proof from direct shower spray. Pick your favorite color combination and put the clocks up in your shower so you never waste anymore time, again.