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Casio

Casio G-Shock Men's GW9400-1B Digital Watch Black

  • Based on 579 reviews
Condition: New
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Availability: Only 5 left in stock, order soon!
Fulfilled by Amazon
Arrives Monday, Feb 2
Order within 19 hours and 53 minutes
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Description

International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions.

Product Dimensions ‏ : ‎ 5 x 5 x 5 inches; 10.41 ounces


Item model number ‏ : ‎ GW9400-1B


Department ‏ : ‎ mens


Batteries ‏ : ‎ 1 Lithium Metal batteries required. (included)


Date First Available ‏ : ‎ December 24, 2019


Manufacturer ‏ : ‎ Casio Tactical


Product Warranty: For warranty information about this product, please click here


Best Sellers Rank: #266,482 in Clothing, Shoes & Jewelry (See Top 100 in Clothing, Shoes & Jewelry) #980 in Men's Wrist Watches #3,065 in Men's Shops


#980 in Men's Wrist Watches:


Brand, Seller, or Collection Name: Casio


Model number: GW9400-1B


Part Number: GW9400-1B


Item Shape: Round


Dial window material type: Crystal


Display Type: Digital


Clasp: Buckle type (buckle clasp)


Metal stamp: no-metal-stamp


Case material: Resin


Case diameter: 2.5 inches


Case Thickness: 15


Band Material: Resin


Band size: Mens Standard


Band width: 24


Band Color: Black


Dial color: Black


Calendar: Date-Month


Special features: Date Display,Alarm,Water Resistant,Day Display


Item weight: 10.41 ounces


Movement: Solar Powered


Water resistant depth: 200 Meters


Product Warranty: For warranty information about this product, please click here


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Feb 2

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • Love this watch, I have two
This watch does everything that it’s showing to do, I have the pink version that came from Japan that was $700 it’s the same watch as this one and I got this one for work, this watch I believe I paid $320 for plus tax and it works flawlessly It has a barometer, compass, altimeter, it has everything and everything works plus the nice part is it is solar powered and you don’t need to replace batteries they’ll last for probably 10 years if you take care of it and then those batteries at that point can still be replaced but after 10 years you might want another one I know $300 for a watch sounds like a lot of money but it’s so much more than just a time piece and they’re rugged as hell I’ve used these watches from G-Shock for decades and they just keep getting better and better, the reason the pink one was so expensive is because it was a limited edition from Japan and they offered those in a couple of rare colors and I just liked the dark pink and so my wife bought it for my birthday and surprised me but for work I prefer black The case and the band are black but it’s not a shiny black it’s a flat black, the face is black behind the crystal and the numbers are dark in the data but you can still read them easily, I like the automatic light where you just hold the light button down for three seconds and then it puts it in auto mode and hold it another three seconds and it turns it back to manual mode sometimes at night it’s nice to have it on automatic because when you rotate your wrist forward and then rotate it back where you can read the time the light comes on for one second or three seconds which you can adjust as well this watch is amazing nobody makes a heavy duty watch better than Casio ... show more
Reviewed in the United States on May 20, 2023 by Daniel Valot
    • Really beautiful G-Shock
Review Image by German German
Just as described! Beautiful watch, big size, easy to set up. Its a bit hard to read in low light but just press the light button and have a perfect contrast.
Reviewed in the United States on September 27, 2025 by German German
    • Nice watch
Legit g shock. Thanks Amazon for great packaging and delivery!
Reviewed in the United States on January 12, 2026 by Zach
    • A real mans watch
Review Image by Jpimentel201 Jpimentel201
In a world where everything looks the same. TV's, cars, fast food restaurants, Smart phones and SMART WATCHES. No thank you, I'll stick with digital g-shocks. The one on the left lasted me 20 years, took a beating and still ticking. On the right is the Rangeman GW-940-1b which I just purchased, and I'm optimistic it'll last at least 10 years. G-shock is tough and fitting for blue collar men. This watch is a good size for my wrist. I'm a big dude 6'2. A small watch would look horrible on my wrist, but this one looks big, tough, and extremely durable. Planning on having it on my wrist for years to come until I retire, and hopefully pass it on to the next generation. Although it is a great watch I'm giving it 4 stars instead of 5 because do to the negative display it is a little difficult to see indoors or in dim light conditions. As a result I ended up exchanging it for the same watch with the positive display to be able to see it better. ... show more
Reviewed in the United States on March 5, 2025 by Jpimentel201 Jpimentel201
    • Worth the purchase
Review Image by J. J.
I think the only thing I didn't really like about this piece was it doesn't have a step counter. Outside of that I really do appreciate the style and the simplicity of the display. It is light weight for the size. I have never been someone to wear a watch due to having to change batteries. Or with the smart watches having to charge every few hours and not able to wear it when charging sigh defeats the purpose of a watch. But this watch's battery should last I believe around 10 years and even though it is on the larger side it still manages to blend well into whatever you wear it is very understated and that is what I appreciate about it the fact that it isn't a flashy piece screaming look at me I love the matte finish of the case and strap. Its hard to find highly functional piece that isn't Bluetooth or a smart watch. The fact that you can have multiple useful functions without having to worry about a source of charging the watch is nice. Even though it is considered a man's piece it still can be worn on a smaller wrist and doesn't look out of place on a female. As I am not into smaller pieces for women they are usually more casual to dress watches but not durable for an active life style. I'm not hard on my things but I don't want a time piece that I have to constantly be aware of. When it comes to day to day activity and one that I have to be reminded of to treat with exceptional care and having to take off just to wash my hands rinse dishes for the dishwasher or even to take a shower I wanted and needed a piece that I can put on forget about until I need it. This does the job perfectly ... show more
Reviewed in the United States on January 13, 2021 by J. J.
    • Watch for the danger zone
Great durable watch. Easy to operate. Wears well very light and comfortable. Easy to read.
Reviewed in the United States on November 8, 2025 by Amazon Customer
    • Can’t go wrong with Gshock
Got for my son it’s his work watch and as a welder/fabricator he beats the hell out it and it keeps going Gshock never lets you down and yes he does use all the sensors on it says it comes in handy
Reviewed in the United States on December 19, 2025 by lunico13
    • A very dim dial.
Review Image by Ivan Kobets Ivan Kobets
Review Image by Ivan Kobets Ivan Kobets
It's some kind of horror, not a watch display that's so awful that it can't be conveyed. You have to twist your hand to catch what time the clock is showing now, even with the backlight, it is very difficult to see during the day, in the dark, the backlight saves. And besides, in the photos, the seller put up beautiful clear photos, but in reality, everything is not so. Everything is dull and dark on the scoreboard. ... show more
Reviewed in the United States on July 29, 2025 by Ivan Kobets Ivan Kobets

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