GR-8900A-7ER review

Casio G-Shock Men’s Watch GR-8900A-7ER Review


G-Shock GR-8900A-7ER Watch Review Summary

My rating: 8/10. Great watch. Value for money, durable watch.

Hello, today I’m doing a G-Shock GR-8900A-7ER review. We’re slowly working our way through some of the most popular G-Shock watches available. These are great watches that I feel offer that very good value for money. Today’s model features Casio’s impressive Tough Solar technology.

I hope you enjoy this GR-8900A-7ER review below.

You may also like my: Best Affordable G-Shock Watches.

GR-8900A-7ER review

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Latest reviews, ratings and prices: G-Shock GR-8900A-7ER watch

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

Watch Review

Dial & Case Design

This model from G-Shock uses a reversed digital display that seems to be pretty popular, to be honest. The white design of the casing gives the watch a more summery finish without going overboard as well. Overall the casing has that typical chunky design, this is due to the thick protective resin the surrounds the stainless steel casing.

Type Of Crystal

On the front of the watch, we have a specially hardened mineral crystal glass. This type of glass is treated to make it extra resistant to scratches & knocks. It’s also very shatter resistant that’s ideal for a watch designed to withstand shock.

Watch Movement

The watch utilizes a Japanese quartz movement that’s powered by Casio’s Tough Solar technology. This means the watch charges via sunlight and doesn’t require any battery changes. Quartz movements are known for their accuracy and reliability with very little need for maintenance.

Watch Size

G-Shock timepieces are known for their oversized style and this model is no different. The casing diameter measures 53mm and has a thickness of 17mm. You can definitely consider this a chunky timepiece that will get noticed on your wrist.


The strap is made of a white rubber resin that’s comfortable and extremely durable. It uses a double tang clasp to make it extra secure. The strap has a width of 25mm that’s in keeping with the larger design of the watch.

Extra features

G-Shock are known for their multifunction capabilities and this timepiece is no different. The key feature of this watch is its use of Tough Solar technology. Extra functions of this watch include a world time display, world time display, automatic calendar,  countdown timer, 5 alarms, super led light, stopwatch. There’s also a display flasher, that’s a light diode that flashes as soon as an alarm, a countdown-time or the hour signal has been reached.

Water Resistance Rating

The water resistance level of this watch is 200m, this is what you find in many of the G-Shock watches and something I’m always impressed with. A rating of 200m / 20 Bar / 600ft makes this watch suitable for professional marine activity, serious surface water sports and skin diving.


Watch Specifications

  • Band Resin strap, standard length, 25mm width, standard buckle style clasp.
  • Case Stainless steel casing with resin surround, sizing diameter: 53mm and thickness: 17mm.
  • Dial Digital display. The window lens is made of mineral glass, this is specially hardened to be resistant to scratches and knocks.
  • Movement Accurate Japanese Quartz movement.
  • Water Resistant A water resistance of up to 200m / 20 bar.

Watch Advantages

  1. G-Shock watches are known for the excellent durability & toughness
  2. Backlight feature for easier reading in dim lit conditions
  3. Built for shock resistance
  4. Tough Solar technology
  5. Popular oversized design
  6. Reversed digital display
  7. Multi-function watch with stopwatch, alarms, countdown timer, and world time display and more
  8. Mineral glass offers a good level of scratch & shatter resistance
  9. 200m water resistance rating

Watch Disadvantages 

  1. Being an oversized watch at 53mm this may not be suitable for people with smaller wrists


My Final Thoughts On This G-Shock GR-8900A-7ER Review:

The G-Shock GD-100MS-3ER is a very chunky, popular watch. As I’ve come to expect from Casio’s G-Shock range, this timepiece offers some very good value for money. It’s best suited for people who are after a durable timepiece, perhaps for work or sports. I’m a big fan of the Solar technology so that’s a big plus in my mind. Overall a great watch, the only drawback would be that it’s not ideal for people with smaller wrists, so keep that in mind.

After looking into the watch design, quality, features, and pricing this watch received an 8/10 from us at The Watch Blog.

You may also like my 100 best watches under £1000

Where to buy the GR-8900A-7ER

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: GR-8900A-7ER

Buy now at Amazon

Buy at Watch Shop

Hope you enjoyed this G-Shock GR-8900A-7ER review. Find more watch reviews below.