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.

F91w 1 Classic Resin Strap Digital Sport Watch Gold Model

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

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€ 73.06

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Sold byAmazon MonacoDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⏳ Stay ahead of time, effortlessly.

ALL DAY VISIBILITY - LED backlight ensures you can check the time or stopwatch even in low-light environments.
DURABLE RESIN BUILD - Lightweight yet tough resin case and band designed to withstand your busiest days and workouts.
READY OUT OF THE BOX - Includes lithium metal battery for immediate use—no delays, just pure efficiency.
VERSATILE TIMEKEEPING - Stay on schedule with full calendar functions including day, date, and 12/24-hour formats.
PRECISION TIMING MASTERY - Track every split and net time with 1/100-second accuracy—never miss a beat in your performance.

The Casio F91WM-9A is a sleek, lightweight resin watch featuring a 1/100-second stopwatch, water resistance, and an LED light for visibility. With precise timekeeping functions including net and split times, plus a durable build and included lithium battery, it’s engineered for professionals who demand reliability and style in every second.

Specifications

ASIN	B01MZF6LL2
ASIN	B01MZF6LL2
Age Range Description	Adult
Band Colour	Black
Band Length	8.75 Inches
Band Material Type	Resin
Band Width	18 Millimetres
Bands	1
Batteries	1 Lithium Metal batteries required. (included)
Best Sellers Rank	140,029 in Fashion ( See Top 100 in Fashion ) 757 in Men's Wrist Watches
Bezel Color	Gold
Brand Name	Casio
Case Diameter	38.2 Millimetres
Case Material Type	Resin
Case Thickness	35.2 Millimetres
Character	Fashion
Clasp Type	Buckle
Closure Type	Buckle
Crystal	mineral
Customer Reviews	4.5 4.5 out of 5 stars (7,832)
Customer reviews	4.5 4.5 out of 5 stars (7,832)
Date First Available	10 Feb. 2017
Department	mens
Dial Color	Gold
Display	Digital
Embellishment Feature	Crystal
Face Style	Gold digital display
Global Trade Identification Number	00889232140810
Included Components	the brand's case
Is discontinued by manufacturer	No
Item Shape	Rectangular
Item Type Name	Watch
Item Weight	21 g
Item model number	F91WM-9A
Manufacturer	Casio
Manufacturer	Casio
Manufacturer Part Number	F-91WM-9ACF
Model Name	F91WM-9A
Model Number	F91WM-9A
Model Series	F-91W
Number of Items	1
Pattern	Solid
Power Source	Battery Powered
Product Dimensions	10.67 x 7.62 x 5.33 cm; 20.87 g
Special Features	Chronograph, Lightweight, Timer
Sport Type	Swimming
Strap Type	Resin Strap
Style Name	Model: F-91WM-9ACF
Theme	Sports
UPC	889232140810
Unit Count	1 Count
Watch Movement Type	Quartz
Water Resistance Level	Water Resistant

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