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Casio

Casio G-Shock GAS100G-1A | Analog-Digital Tough Solar Watch | Gold Ion-Plated Bezel | 200M Water Resistant | Shock Resistant

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4th of July Sale · 20% off was $248.00

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Availability: Only 1 left in stock, order soon!
Fulfilled by Amazon
Arrives Jul 22 – Jul 31
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Description

"The Casio G-SHOCK GAS100G-1A combines rugged durability with a bold touch of elegance. Featuring Tough Solar power, this analog-digital watch runs reliably on light with extended battery life. Its shock-resistant build and 200-meter water resistance make it suitable for both everyday wear and extreme conditions. Designed with a gold ion-plated stainless steel bezel, the GAS100G-1A elevates the classic G-SHOCK look with refined style. Equipped with Super Illuminator double LED lighting, it ensures easy readability in all environments. Packed with functionality, this watch includes world time for 48 cities, stopwatch, countdown timer, 5 daily alarms, and a full auto-calendar. A statement piece that balances toughness with sophistication, the GAS100G-1A is perfect for those who want reliability and standout design in a single timepiece."

Is Discontinued By Manufacturer ‏ : ‎ No


Product Dimensions ‏ : ‎ 3.6 x 4 x 2 inches; 6.4 ounces


Item model number ‏ : ‎ GAS-100G-1ACR


Department ‏ : ‎ Men's


Batteries ‏ : ‎ 1 C batteries required.


Date First Available ‏ : ‎ August 31, 2017


Manufacturer ‏ : ‎ Casio


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


Best Sellers Rank: #1,669,058 in Clothing, Shoes & Jewelry (See Top 100 in Clothing, Shoes & Jewelry) #7,222 in Men's Wrist Watches #14,691 in Men's Shops


Display: Analog-Digital


Watch Movement Type: Quartz


Additional Features: Tough Solar, Hand shift feature, Super Illuminator, Shock resistant, Water Stable solar power, Extreme sports suitability


Power Source: Solar Powered


Strap Type: Two Piece Strap


Water Resistance Depth: 200 Meters


Sport Type: Walking


Clasp Type: Tang Buckle


Water Resistance Level: Waterproof


Embellishment Feature: Crystal


Closure Type: Buckle


Style Name: Digital


Shape: Casio G-Shock Watch Black Gold


Band Color: Black


Dial Color: Black


Theme: Tough


Pattern: Solid


Face Style: Analog-Digital


Character: Fashion


Brand Name: Casio


Model Name: GAS100G-1A


Included Components: Watch


Model Number: GAS-100G-1ACR


Series Number: 100


Item Weight: 6.4 Ounces


Manufacturer: Casio


UPC: 889232162201


Manufacturer Part Number: GAS100G-1A


Age Range Description: Adult


Item Type Name: Sport Watch


Band Material Type: Resin


Case Material Type: Resin


Crystal: Mineral Glass


Case Diameter: 55.1 Millimeters


Band Width: 22 Millimeters


Case Thickness: 15.0


Bands: 1


Warranty Type: Limited Warranty


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Jul 22 – Jul 31

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

    • Better in Person!
This watch looks really great in real life. Better than the pictures. I got it for my Son who's in middle school, and told him I thought it was too fancy. He kept it anyway, wears it every day, loves it, and it survives everything. Quality, toughness, reliability you'd expect from G-Shock. It's the only watch brand I wear. This one is a winner. ... show more
Reviewed in the United States on May 2, 2023 by NewOrder
    • Impressed, and elegant looking G-Shock.
Like many reviews I am impressed that this timepiece looks much better than in the photo shown. Elegant is the right word which I would not normally apply to a G-Shock (and I have had several). I purchased this for work but would feel very comfortable wearing it in a more formal environment. The black LCD with white lettering are very easy to read. This says a lot since I almost always get black watch faces with white hands so that I can read them without my glasses. My only issue, as with all Casio brand watches is that the instructions are not easy . . . but with a little persistence and re-reading you will figure it out. ... show more
Reviewed in the United States on June 17, 2019 by Sheridan Resident
    • really great watch
This is an incredible watch. I get complements everywhere i go. It keeps time really well and has alot of usefull functions. The size looks good on my 7 1/2" circumference wrists and set up quickly. It's also super water resistent. For the price its basically a crime not to buy it if your looking for a solar cheged watch thats also incradably durable. The nuber of stuff i hit this on is insane and it still has like to scratches. I HAVE A WARNING FOR YOU ALL. DO NOT UNDER ANY CIRCUMSTANCES USE DEET BASED BUG SPRAY WHILE WARING THIS WATCH, THE DEET EATS AWAY AT THE CASE AND BAND, IF YOU GET DEET ON HERE ITS FINE, JUST RINSE IT OFF AND CLEAN THE WATCH. ... show more
Reviewed in the United States on September 7, 2025 by Amazon Customer
    • This Should be YOUR next watch! This Should be YOUR next watch!
Review Image by Maurice Wheeless
Review Image by Maurice Wheeless
Review Image by Maurice Wheeless
Had Absolutely No Dislikes was worried at first when I read it was sold by Fashion House Discount and Not Amazon exclusively. I put it to the Fake VS Real test and it passed 100% this is an AUTHENTIC Casio Timepiece all packaging was Authentic 100%. I've been a Casio fan since the old Calculator watches and I've always wanted a G-Shock but it had to be the RIGHT one. My last Casio was a Tough Solar that I purchased 5 years ago or so. It still works and within the +/-15 second range (7 seconds behind my Samsung Smartphone) The included directions are fine but as I'm over 40 had to download the PDF for a larger picture. Set watch up to my specs within 5 minutes and calibrated against my smartphone as I always do. Beautiful Timepiece I hope the gold doesn't wear off but I've read in other reviews from some two year plus owners that theirs still look fine. Very Satisfied Customer! ... show more
Reviewed in the United States on September 19, 2019 Reviewed in the United States on September 19, 2019 by Maurice Wheeless
    • Vendedor Marca y calidad
Casio ha sido una marca confiable que he usado desde la juventud, he devuelto este G Shock por dos cosas, 1) no tomé en cuenta el tamaño del mismo y fue demasiado grande en mi mano, creo que fallé en ese aspecto y pues esto puede servir para alguien más a la hora de comprar para que tome en cuenta el tamaño 2) la luz se prendía constantemente varias veces durante el día, no se si fue algo que active a la hora de programarlo o era un fallo de fábrica pero que en realidad no lo hallé normal que eso pasara, pues durante el día no necesito luz para leer un reloj, para la noche estaba bien pero no para el día, bien ahora hablaré de la marca y la calidad de reloj, en general Casio es una buena marca, el reloj se ve fantástico, buena construcción, el color dorado era fantástico me encantó pero esos dos motivos fueron la razón para devolverlo y siempre confiaré en Casio, el vendedor le doy pulgar arriba pues hizo bien su trabajo con mi compra y cumplieron con su trabajo el proceso de compra, venía bien empaquetado y bien cuidado, el envío todo estuvo excelente, falta ver cómo se comportan con mi devolución ya que aún no lo han recibido pero creo que no habrá problemas con ello pues veo que dan un buen servicio al cliente, creo que no tendré nada malo que opinar de ello, he dado 5 estrellas pues no tengo nada negativo que decir con respecto a esta compra y el artículo. El vendedor es bueno si algún día se encuentra por comprar algún artículo de My Gift Stop no lo dude su compra será segura, bien atendido y seguro que tendrá su artículo ... show more
Reviewed in the United States on May 5, 2024 by Alex R.
    • A good watch if on sale
It's a good watch for the price, though the plastic feels a bit cheap.
Reviewed in the United States on January 19, 2025 by Lu Huang
    • Increíble
Lo mejor que he comprado como reloj
Reviewed in the United States on January 10, 2026 by Jorge Rodriguez
    • Gshock got this one right
Casio got a G-shock right. I own a 10 year old g-shock, it works well. Own an Omega, a Seiko kinetic, a luminox and a submariner knock off. This watch has become more everyday wear. Very easy to read, good LED lighting, and a great looking watch. Much better looking than its picture. My son picked this one as one of his Christmas presents. After delivery, I looked at it I liked it so much I got one for myself. Great decision. It is thicker than all watches I mentioned, but fits well and looks good. But this watch with confidence that folks will compliment its styling. Wl ... show more
Reviewed in the United States on December 30, 2018 by Txl

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