How are they charging $10 for this $3 watch from 1990?

Anything that was $3 in 1990 is now $10. Back in 1990 gas was $1.16/gal. The average home price was under $150000. As time moves on prices go up.

Does the count down timer be set to seconds?

No countdown timer. Look at Model F201WA-1A for that feature.

how far in depth is the water resist

If you want to be absolutely safe, get the Casio MRW200 dive watch which is good for 100 m. Casio F91W is water resistant and you could take it in shower, swimming, etc.

The rubber band broke after 2 years of use. I love this watch and don't want to get a new one. Any tips for a replacement band? Maybe a nylone one?

Aliexpress or ebay you'll find almost exact generic replacements for a couple bucks shipped. Search for words like F91W strap, 18mm watch band. You can also use normal 18mm spring bars instead of the pins that are stock with the F91W.

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F91W Series | Digital Watch | Water Resistant | LED Light | 1/100 SEC Stopwatch | Regular Time Keeping (HR, Min, SEC, PM, Date, Day) | Daily Alarm | Lightweight | 7 Year Battery

Product ID: 253442479

💧Water Resistant 30m splash-proof

🔋7 Year Long-lasting Battery

⏱️1/100 SEC Stopwatch precision

¥4394

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Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⌚ Timeless reliability meets modern hustle.

SET IT AND FORGET IT - Daily alarm function keeps your schedule on point without hassle.
LIGHTWEIGHT ENDURING - Weighs just 54g with a 7-year battery life for effortless, long-term wear.
ALWAYS ON ALWAYS READY - Built-in microlight ensures clear visibility in any lighting condition.
SPLASH PROOF DURABILITY - Water resistance up to 30 meters keeps you worry-free in daily life.
PRECISION TIMING AT YOUR FINGERTIPS - Stopwatch with 1/100 second accuracy for flawless time tracking.

The Casio F91W is a lightweight, water-resistant digital watch featuring a precise 1/100 second stopwatch, a built-in LED microlight for easy reading, and a daily alarm. With an impressive 7-year battery life and splash-proof design, it’s the perfect blend of durability and functionality for professionals on the go.

Specifications

Asin	B000GAWSDG
Batteries	1 Lithium Metal batteries required. (included)
Best Sellers Rank	#19 in Women's Wrist Watches
Country Of Origin	China
Date First Available	7 August 2012
Department	Men
Is Discontinued By Manufacturer	No
Item Model Number	F-91W-1X
Manufacturer	Casio
Product Dimensions	9 x 34 x 39 cm; 53.86 g

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¥4394

Duties & taxes included

In stock

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.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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