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: 39743796

💧Water Resistant splash-proof design

🔋7 Year Battery life

⏱️1/100 SEC Stopwatch precision

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33195CFA

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Sold byAmazon SenegalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⌚ Timeless precision meets modern hustle – never miss a beat!

CLEAR VISIBILITY ANYTIME - LED backlight lets you check the time instantly, day or night, no fumbling required.
SPLASH RESISTANT DURABILITY - Water resistant design protects against everyday splashes—ready for any hustle.
EFFORTLESS DAILY RELIABILITY - 7-year battery ensures your watch keeps pace with your busy lifestyle without interruption.
PRECISION TIMING AT YOUR FINGERTIPS - Experience ultra-accurate 1/100 second stopwatch for flawless time tracking.
LIGHTWEIGHT COMFORT MEETS CLASSIC STYLE - Slim 33mm resin case and lightweight build make it the perfect all-day companion.

The Casio F91W Series is a sleek, lightweight digital watch featuring a precise 1/100 second stopwatch, water resistant casing, and a long-lasting 7-year battery. With an easy-to-read digital display, LED backlight, daily alarm, and durable resin construction, it’s the ultimate everyday timepiece for professionals who value reliability and classic style.

Specifications

ASIN	B01MZF6LL2
ASIN	B01MZF6LL2
Additional Features	Chronograph, Lightweight, Timer
Age Range Description	Adult
Band Color	Black
Band Length	8.75 Inches
Band Material Type	Resin
Band Width	18 Millimeters
Bands	1
Batteries	1 Lithium Metal batteries required. (included)
Best Sellers Rank	#373 in Clothing, Shoes & Jewelry ( See Top 100 in Clothing, Shoes & Jewelry ) #1 in Men's Wrist Watches
Brand Name	Casio
Case Diameter	33 Millimeters
Case Material Type	Resin
Case Thickness	35.2 Millimeters
Character	Fashion
Clasp Type	Buckle
Closure Type	Buckle
Crystal	mineral
Customer Reviews	4.6 4.6 out of 5 stars (60,952)
Date First Available	February 10, 2017
Department	Unisex
Dial Color	Gold
Display	Digital
Embellishment Feature	Crystal
Face Style	F91W
Global Trade Identification Number	00889232140810
Included Components	the brand's case
Is Discontinued By Manufacturer	No
Item Type Name	Watch
Item Weight	0.09 Kilograms
Item model number	F91WM-9A
Manufacturer	Casio
Manufacturer	Casio
Manufacturer Part Number	F-91WM-9ACF
Model Name	F-91WM-9ACF
Model Number	F91WM-9A
Pattern	Solid
Power Source	Battery Powered
Product Dimensions	4.2 x 3 x 2.1 inches; 3.2 ounces
Shape	Rectangular
Sport Type	Walking
Strap Type	Two Piece Strap
Style Name	F91W
Theme	Sports
UPC	889232140810
Unit Count	1 Count
Warranty Type	Limited
Watch Movement Type	Quartz
Water Resistance Level	Water Resistant

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Received my product in pristine condition. Great service overall.

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