Does it have a countdown timer?

Not out of the box, but it does if you modify it. It's actually really easy to do. Open it up, and remove a small solder jumper by scraping or soldering it off. There are easy YouTube videos on it. I did on mine and now have a countdown timer.

Can it display the time and stop watch at same time?

The time will be displayed at the bottom of the watch.

I need the manual on the watch I accidentally lost it

Here is a link to the User's Manual for this Casio model W800H https://support.casio.com/storage/en/manual/pdf/EN/009/qw3240.pdf

Casio W800hg Series Men S Digital Watch 100 Meter Water

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

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Description

⌚ Stay sharp, stay ahead — time waits for no one!

DIVE READY DURABILITY - 100 meters water resistance means poolside meetings or sudden downpours won’t slow you down.
DUAL TIME ZONE MASTERY - Seamlessly toggle between two time zones—perfect for global professionals and jetsetters.
ALWAYS ON ALWAYS VISIBLE - LED backlight and auto calendar keep you effortlessly in sync, day or night.
PRECISION TIMING ON DEMAND - 1/100 second stopwatch for flawless time tracking in every task and workout.
ENDURANCE THAT OUTLASTS YOUR HUSTLE - Powered by a decade-long battery, so you never miss a beat.

The Casio W800HG Series men’s digital watch combines rugged 100-meter water resistance with a 10-year battery life, ensuring reliability for years. Featuring a precise 1/100 second stopwatch, dual time display, multi-function alarms, and an LED backlight, it’s engineered for professionals who demand durability and functionality in a sleek, blackout design.

Specifications

ASIN	B087YZ3G9D
Additional Features	World Time, Water Resistent, LED Light, Date and Month Display, Adjustable Display
Age Range Description	Adult
Band Color	Black
Band Material Type	Resin
Band Width	17 Millimeters
Best Sellers Rank	#55,013 in Clothing, Shoes & Jewelry ( See Top 100 in Clothing, Shoes & Jewelry ) #122 in Men's Wrist Watches
Brand Name	Casio
Case Diameter	37 Millimeters
Case Material Type	Resin
Case Thickness	13 Millimeters
Clasp Type	Buckle
Closure Type	Buckle
Crystal	Mineral
Customer Reviews	4.6 out of 5 stars 25,197 Reviews
Dial Color	Black
Display	Digital
Embellishment Feature	Crystal
Face Style	Black
Global Trade Identification Number	00889232267777
Included Components	Casio Men's Quartz Watch with Resin Strap, Black, 17 (Model: W-800H-1BVCF)
Item Type Name	Watch
Item Weight	4.96 ounces
Manufacturer	CASIO
Manufacturer Part Number	W-800H-1BVCF
Manufacturer Warranty Description	Warranty
Material	Plastic
Model Name	Casio Men's Quartz Watch with Resin Strap, Black, 17 (Model: W-800H-1BVCF)
Model Number	W-800H-1BVCF
Pattern	Solid
Power Source	Battery Powered
Series Number	800
Shape	Square
Sport Type	Walking
Strap Type	Adjustable
Style Name	W-800H-1B
UPC	889232267777
Warranty Type	Manufacturer
Watch Movement Type	Quartz
Water Resistance Depth	100 Meters
Water Resistance Level	Water Resistant

Reviews

O**A

2.11.2022

J**A

20.05.2017

G**P

9.04.2026

K**J

22.09.2025

W**.

18.04.2026

D**N

6.04.2025

J**Z

12.04.2026

G**.

24.07.2016

S**N

6.11.2025

Z**R

3.08.2024

J**R

10.08.2025

マ**ヤ

1.03.2024

E**H

18.04.2026

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Casio W800HG Series | Men’s Digital Watch | 100 Meter Water Resistance | Multi Function Alarm | 100 SEC Stopwatch | Auto Calendar | Countdown Timer | LED Light | Dual Time| 10 Year Battery

Description

Specifications

Reviews

Common Questions