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Casio

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

  • Based on 614 reviews
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Availability: Only 1 left in stock, order soon!
Fulfilled by Amazon
Arrives Aug 13 – Aug 18
Order within 20 hours and 24 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: #277,946 in Clothing, Shoes & Jewelry (See Top 100 in Clothing, Shoes & Jewelry) #1,024 in Men's Wrist Watches #2,727 in Men's Shops


#1,024 in Men's Wrist Watches:


Display: Digital


Watch Movement Type: Solar Powered


Additional Features: Date Display,Alarm,Water Resistant,Day Display


Power Source: Solar Powered


Strap Type: Plastic Strap


Water Resistance Depth: 200 meters


Sport Type: Walking


Clasp Type: Buckle type (buckle clasp)


Water Resistance Level: Water Resistant


Embellishment Feature: Crystal


Closure Type: Buckle


Style Name: Digital


Shape: Round


Band Color: Black


Dial Color: Black


Theme: Sports


Pattern: Solid


Face Style: digital


Character: Sports


Brand Name: Casio


Model Name: GW9400-1


Included Components: Perpetual Calendar, Atomic Timekeeping, Radio Controlled, Chronograph, World Time, Alarm, Month, Date, Day, GMT, Second Time Zone, Hour, Minute, Second, Power Reserve Indicator, Sunrise and Sunset Times, Thermometer, Altimeter, Barometer, Compass, Solid Case Back, Tang Clasp


Model Number: GW9400-1B


Global Trade Identification Number: 93


Unit Count: 1 Ounce


Manufacturer: Casio Tactical


UPC: 889232252193


Age Range Description: Adult


Manufacturer Part Number: GW9400-1B


Band Material Type: Resin


Case Material Type: Resin


Crystal: Crystal


Case Diameter: 2.5 inches


Band Width: 24


Case Thickness: 15


Bands: 1


Warranty Type: Limited


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Aug 13 – Aug 18

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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Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing 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
    • Worth the purchase
Review Image by 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.
    • Great company
Watch was awesome. Received it quick. I returned it with no problem. Quick refund. Excellent to deal with!
Reviewed in the United States on July 24, 2026 by kevin d.
    • Really beautiful G-Shock
Review Image by 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
    • Excellent watch. Hard to update with Atomic Time server.
Watch arrived Feb 2024 1.5 minutes fast. It showed it last synced with Atomic Server June 2023 so that's expected as it comes in a metal box. It's supposed to update nightly and sync with the server but it requires a strong signal. Leaving it in a window overnight didn't work. I physically had to go outside and face Denver and do a manual sync. 5 minutes with a steady strong signal (L3) did the trick. It's a little hard to read since it's blacked out, but I love the look and size of the watch since I have large wrists/hands. I especially like this because my work doesn't allow bluetooth devices and this is better than a simple Timex. Extremely high quality. I'd say keep an eye on it before buying. I got it for $240 and a week later it's selling for $217. ... show more
Reviewed in the United States on February 22, 2024 by Mike
    • Built tough
Great watch !!! Logged countless hours in water, mud, and sand still running strong.
Reviewed in the United States on July 7, 2026 by Jason.p
    • Love the watch, just 2 things
Review Image by Bear
Review Image by Bear
Review Image by Bear
Review Image by Bear
First of all, as a Marine, I Love this watch. I was looking for something very discrete and stealth without all the smart bells and whistles (pedometer, heart rate etc.) so I’m not beeping when running a soft knock target. I did however want all the useful bells and whistles for me personally (Solar powered, altimeter, barometer, temp, sunset/rise, etc.) The only two things I wish they did a bit differently would be the sizing and the legibility. I’m a small guy at 5’7” 160lbs, you can see a comparison of my old g-shock I bought in Afghanistan back in 2011 and this new one is quite a bit larger than I’m used to but I’m getting used to it. The legibility is the other thing, I know with the light I don’t exactly need it but you can see from my video how you need to have a little light on the face to be able to see it in daylight. Which is one thing if stealth is what they were going for. Unfortunately that point is rendered moot by the glare of acrylic face of the watch which still mirrors/projects a significant reflection. If they had a matte face to reduce it that would’ve been cool. I usually just buy clear matte vinyl that I’ll cut and stick over the face to get rid of the glare. Hope this helps someone. ... show more
Reviewed in the United States on January 20, 2022 by Bear
    • Will be only watch I'll wear...
Review Image by jimmy Cendejas
Exactly what I was looking for to get away from smart watch...
Reviewed in the United States on July 28, 2026 by jimmy Cendejas

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