I was wondering the same. I was originally looking for a waterproof timer, but then I saw that this one says it's waterploof and thought that it might be even better. Unfortunately I see the seller responded already. It turns out that waterploof means something between waterproof and water resistant. I believe the technical term is water proosistant.

How do you set the clock?

It's very easy but the "English" instructions are gibberish. Here is what you really do: Hold "Clock/Timer" for a few seconds until it beeps to switch to time-setting mode. When you're done setting the time, press "Clock/Timer" normally to exit clock-setting mode. In clock-setting mode: - Press "Start/Stop" to swap between setting the hour and setting the minute. - Press "1 min" to change the number. (Or, if you want, you can press "10 min" to skip 10 at once.) - Press "10 sec" to switch between AM, PM, and military time. That's it!

Is the alarm continues until you turn it off? Or does it just beep once and then stop?

If you get the tear drop shaped one, the alarm sounds for 15 seconds and then stops on its own. Which is exactly what I wanted for a shower timer so the kids get a ‘hey it’s time to finish up!’ Without having to step out of the shower and turn a timer off. It’s perfect!

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dretec Digital Timer Water Proof Shower Timer Shower Clock Bathroom Kitchen Timer Magnetic Backing Silver Black Officially Tested in Japan (1starter Lithium Battery Included)

dretec Digital Timer Water Proof Shower Timer Shower Clock Bathroom Kitchen Timer Magnetic Backing Silver Black Officially Tested in Japan (1starter Lithium Battery Included)

Product ID: 255967940

Details

Brand
dretec
Colour
Silver&black
Item weight
45 Grams
Material
Silver-plated
Product dimensions
1.4D x 9W x

💧IPX7 waterproof up to 1m/30min

🧲3-way mount: magnet, stand, hook

⏱️99min 50sec max timer range

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¥9802

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Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⏳ Stay sharp, stay timed—never miss a beat with dretec’s waterproof precision!

DUAL MODE FUNCTIONALITY - Switch instantly between timer and clock modes to stay on schedule in any setting.
WATERPROOF CONFIDENCE 💧 - IPX7 rating means splash, rinse, or shower—no worries, just seamless timing.
VERSATILE MOUNTING MAGIC 🧲 - Magnetic back, retractable stand, and hanging hook keep your timer exactly where you need it.
PRECISION TIMING MASTERY ⏱️ - Set exact intervals up to 99:50 with quick 10min/1min/10sec buttons—perfect for multitasking pros.
SLEEK JAPANESE DESIGN DURABILITY - Silver-plated, slim, and lightweight with a battery life over 1 year—style meets endurance.

The dretec Digital Timer is a sleek, silver-plated, IPX7 waterproof timer designed in Japan with a max timing capacity of 99 minutes 50 seconds. Featuring quick-set buttons, a loud 15-second alarm, and versatile mounting options (magnet, stand, hook), it’s perfect for showers, kitchens, workouts, and study sessions. Powered by a long-lasting lithium battery included, it combines durability with stylish functionality for busy professionals.

Specifications

ASIN	B07FDRQDM2
Best Sellers Rank	#80,661 in Kitchen ( See Top 100 in Kitchen ) #335 in Kitchen Timers
Brand Name	dretec
Color	Silver&black
Customer Reviews	4.3 4.3 out of 5 stars (2,829)
Item Dimensions D x W x H	1.4D x 9W x 8.2H centimeters
Item Weight	45 Grams
Manufacturer	dretec
Manufacturer Part Number	T-565ACRDI
Material Type	Silver-plated
Model Number	T-565ACRDI
Number of settings	7
Screen Size	9 Centimeters
Unit Count	1 Count

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Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Japan.

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