Waterproof Timer IPX4 waterproof , can withstand the spray from any direction. Perfect for use in bathroom or next to the sink. Please don't put it in the water, otherwise the product will be damaged. Small Size and Good Performance The size of this shower timer is 3.1X2.5X0.9 inch, weight is only 0.08lb, its small and cute, it can be used not only in bathroom, but also in kitchen, laundry area or outdoor patio.It is powered by 1 pcs button battery, which is included in the package. Simple OperationPressM to set minutes, press S to set seconds, Press M and hold it can quickly set minutes, pressS and hold it can quickly set seconds, pressM and S at the same time is to clear. Count Up/Down TimerNot only for count down, but also a count up timer. Counting down from 1 seconds to 99 minutes 59 seconds, or as a stopwatch counting up from 1 seconds to 99 minutes 59 seconds, makes it a perfect timer for housewives, kids, teachers and students. 3 Mount OptionsThere is strong magnet on the back of the device, you can stick it to the refrigerator or dishwasher; also a hanging hole there for wall mount, it also comes with a suction cup.