Small Size, Good PerformanceThe size of this shower timer is 3.1*2.5*0.9 inches, and the weight is only 0.08 lbs, small and cute, it can be used not only in the bathroom, but also in the kitchen, laundry area or outdoors on the patio. It is poweredby 1 button battery which is included in the package. Easy operationPress "M" to set minutes, press "S" to set seconds, press "M" to quickly set minutes, press "S" to quickly set seconds, press "M" and "S" at the same time clear. Up/Down TimerNot only countdown, but also up timer. Counts down from 1 second to 99 minutes 59 seconds, or as a stopwatch from 1 second to 99 minutes 59 seconds, making it the perfect timer for housewives, kids, teachers and students. 3 Mounting OptionsThere are strong magnets on the back of the device, you can stick it on the refrigerator or dishwasher; there is also a hanging hole for wall hanging, it is also equipped with a suction cup. Size: 88*22mm