G-Shock GA-120-1AER review

Casio G-Shock Men’s Watch GA-120-1AER Review


Casio G-Shock GA-120-1AER Watch Review Summary

My rating: 8.5/10. Great watch. Durable oversized watch.

Hello, today I’m doing a G-Shock GA-120-1AER review. I’ve always been a big fan of these oversized timepieces from Casio, I just love the G-Shock collection. They’re ideal for people who need a durable watch, without it costing the earth. So if you wanted an affordable well built watch, this is well worth considering in my opinion.

I hope you enjoy this Casio GA-120-1AER review below.

You may also like my: 13 Best Cheap G-Shock Watches

G-Shock GA-120-1AER review

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At the bottom of this article, you can find a list of my recommended retailers to purchase this watch from

Casio G-Shock GA-120-1AER Watch Review

Dial & Case Design

I think the dial design of this G-Shock watch is quite interesting. You’ll notice the hands seem a little shorter than other watches, this is to make the digital display easier to read, it’s a clever idea to be fair. If you’re into your dual display watches, then that’s something you’re going to appreciate. Why not have a read of this 5 top analogue digital watch list next. I think my favourite part of the dial has to be the sense of depth you get, I just think it’s been done really well here.

A key feature of G-Shock watches is their durability. You’ll notice the stainless steel casing of this watch is wrapped in this protective, thick, durable resin. This gives it all the protection it need for its shock and magnetism resistance. This is what gives the watch that durable, chunky design.

Type Of Crystal

Protecting the dial we have a mineral crystal glass, found in many of the G-Shock watches. The reason being, it’s strong, and affordable. Mineral glass is specially hardened to offers a great level of scratch resistance. It’s also quite shatter resistance, better so than sapphire glass, making it ideal for this style of timepiece.

Watch Movement

Powering the watch is a popular Japanese quartz movement. These are often used as their accurate and reliable, as well as helping in keep the overall cost of the watch down. It’s found in most the G-Shock watches across their range.

Watch Size

I mentioned earlier on that this is a brilliant oversized timepiece. And I meant it, the watch is BIG. With a casing diameter of 51mm and a thickness of 17mm this should stand out quite nicely on your wrist. If you wanted a big & chunky design, well, you got it.


The strap is made of the same durable resin that protects the casing of the watch. It’s comfortable and sturdy, with a width of 28mm, much wider than your standard strap, but perfectly in-keeping with this type of oversized design. It fastens with a typical buckle style clasp that’s simple to operate.

Extra features

As you’d expect from the Casio-G-Shock range, you get a whole host of extra useful features with this watch such as the following: Auto-LED, magnetic resistance, world time function, stopwatch, timer, dialy alarms, snooze, speed display, automatic calendar. To get more details on any of those features, check this detailed Casio page.

Water Resistance Rating

This watch has a water resist rating of 200m. A rating of 200m / 20 Bar makes this watch suitable for professional marine activity, serious surface water sports and skin diving.

Casio G-Shock GA-120-1AER Watch Specifications

  • Band Thick polyurethane strap, standard length, 25mm width, standard buckle style clasp.
  • Case Stainless steel casing, sizing diameter: 51mm and thickness: 17mm.
  • Dial Analogue digital dual display. The window lens is made of mineral glass, this is specially hardened to be resistant to scratches and knocks.
  • Movement Japanese quartz movement.
  • Water Resistant A water resistance of up to 200m / 20 bar.

G-Shock GA-120-1AER Watch Advantages

  1. G-Shock watches are built to last with their durable tough design
  2. Mineral glass offers a good level of scratch & knock protection
  3. Full of lots of useful functions
  4. Features a backlight for easier reading in dim lit conditions
  5. 200m water resistance rating

Casio GA-120-1AER Watch Disadvantages 

  1. With an oversized 51mm casing diameter this watch might not be suitable for people with smaller wrists

My Final Thoughts On This Casio G-Shock GA-120-1AER Review:

The G-Shock GA-120-1AER is yet again, another brilliant addition to the G-Shock family. If you like dual display oversized watches, then it’s probably ideal for you. It’s fair to say there’s quite a few features that may go unused, but that’s part of creating a watch that’s suitable for everyone when it comes to functions. Overall, I love it, I love the sturdiness, and I love the design.

After looking into the watch design, quality, features, and pricing this watch received an 8.5/10 from us at The Watch Blog.

You may also like my Best Watches Under £500

Where to buy the GA-120-1AER

I like to stick to listing retailers that I’ve actually had experience buying from in the past. Below I’ve listed some of the top places to buy this watch from, check all for the best price. Variations of this model include: GA-120-1AER

Buy now at Amazon

Buy at Watch Shop Unavailable

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