Waterproof Shower Timer: MOSTRUST Shower Timer is designed with an IPX7 waterproof rating, allowing it to function properly even when fully submerged in water for a short period of time. It is useful not only for shower timer in the bathroom, but also for studying, exercising, cooking, and outdoors. It can serve as both a timer and a clock. Easy to Use: This timer can measure up to 99min 50sec. The shower clock timer has 3 quickly adjustable buttons (10min/1min/10sec). You can switch the timer to a clock with just one button. Three Easy Installation Options: This digital timer has magnetic back, retractable stand, and a hole for hanging. You can take this pocket size timer anywhere. Stick it on the fridge surface, pull out the retractable stand for table-top use, or run a string through the hole to hang it. Audible Alarm: The kitchen timer is made of durable plated material. A gentle alarm sounds when the timer reaches zero, signaling the end of the shower. The alarm continues for 15sec and conveniently turns off automatically. Shower Clock: MOSTRUST bathroom shower clock timer operates on 1 CR2032 battery, which is contained in the timer.