Usage Tips:[Waterproof Timer] It is not only suitable for bathroom shower, but also suitable for learning, sports, cooking and outdoor. It is IPX4 waterproof and can withstand spray from any direction. Great for use in the bathroom or next to the sink. Do not put it in water, otherwise the product will be damaged. [Good Performance] This shower timer measures 3.1x2.5x0.9 inches and weighs only 0.08 pounds, small and cute, it is powered by 1 button battery, included in the package. [Simple operation] Press "M" to set the minutes, press "S" to set the seconds, press "M" and hold to quickly set the minutes, press "S" and hold to quickly set the seconds, press "M" and "S" at the same time Clear. [Timer] Not only can count down, but also can time up. Countdown 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 Options] Magnetic back, you can take this pocket timer anywhere; There is also a hanging hole for wall hanging, and it also comes with a suction cup. Colour:Black/Green Material:ABS Package Contents: 1 * timer Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.