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Casio

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

  • Based on 568 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon
Arrives Oct 13 – Oct 14
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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


Best Sellers Rank: #641,310 in Clothing, Shoes & Jewelry (See Top 100 in Clothing, Shoes & Jewelry) #2,852 in Men's Wrist Watches #6,258 in Men's Shops


#2,852 in Men's Wrist Watches:


#6,258 in Men's Shops:


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: Oct 13 – Oct 14

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

    • 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
    • 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
    • Absolutely fantastic
This watch checks all the boxes - never needs a battery, never needs to have the time set, never needs to connect to a cell phone to work. Some people complained about receiving a new but 10 year old watch, that simply makes no sense. This model only came out in February 2020. I checked the serial number on the one I received and it was manufactured in 2024. I have no problem seeing the display. It is darker than a traditional display however during the day it is clearly visibly and at night you can just hit the illumination button. It synced the very first night with the atomic clock in Denver. I was surprised because I’m all the way on the opposite side of the country. Overall this is an excellent watch for someone who wants a lot of functions directly on board without being troubled with charging or using Bluetooth from a cell phone. ... show more
Reviewed in the United States on March 21, 2024 by MK
    • Hard to read time
Beautiful watch. Well made. I just could not see the time because of the dark face. Love the look.
Reviewed in the United States on March 22, 2025 by Jason Keyser
    • Still a legendary classic. Keeps on ticking, even after a kicking.
Fits well and feels great, nearly perfect time keeping, built tough and looks stealth in the black-on-black scheme. Easy buy, I’d buy it again.
Reviewed in the United States on February 12, 2025 by Dan M
    • Love the watch, just 2 things
Review Image by Bear Bear
Review Image by Bear Bear
Review Image by Bear Bear
Review Image by Bear Bear
The media could not be loaded. 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 Bear
    • True Survivor
Got this as a gift for our son, who was in ROTC and is now active duty. It has survived unknown trauma in both, but guaranteed he doesn't baby it. A couple of years later, he still loves it and is still wearing it daily. He says the functions are pretty overwhelming, but likely they will come in handy the more he gets into his duties. It has thrived living in diverse climates, from hot and humid to freezing cold and dry, mud, swimming, and dust. One thing we did learn, trekking through FL swamps- remove it before using bug spray. The band got slightly pitted from that, being plastic, but according to the wearer it just adds to the "lived-in" look, and its functioning was not a bit affected. It sometimes didn't immediately update the time as it should (tested by crossing many time zones), but apparently it's simple to update manually. Would definitely recommend as gift for anyone with military inclinations, or anyone who loves a watch that does a lot of stuff and is tough. ... show more
Reviewed in the United States on December 5, 2024 by Brutally Honest
    • 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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