Last updated at 14/05/2026 10:30:39
Casio G-Shock GA-2100NNJ-8AJR
Delivery $43
Casio G-SHOCK Men's Resin 200M Water Resistant Analog Shock Resistant Quartz Watch GA-2100NNJ-8A gray
Delivery between 15–27 May $6
Casio G-shock Ga-2100nnj-8ajr Men's Gray Digital Watch,
Free delivery
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originally posted on jurawatches.co.uk
Great watch though sometimes difficult to see the LCD display. Very solid construction and quality. Of all the Casioaks the GM2100 is probably the best IMHO.
originally posted on g-shock.co.uk
A really great looking watch.Legibility, both of the analogue and also the digital areas could be better. More lume, not just on the two hands but should be on the markers too and also a 'positive' rather than the negative LCD display would be easier to read. Difficult to read and therefore set LCD functions in low light conditions.Back-light coudl be brighter and time it stays on should longer (appreciate battery affect).
originally posted on g-shock.co.uk
Was good looking and stylish when arrived. After a few months of using, strap and casing turns yellowish giving it a dirty look. Tried washing it and everything. Now its unwearable beacuse of its low quality dirty plastic look. It will take another 40-50 pounds to replace the strap and casing. Go for any solid colours if you need a long lasting quality
| Alarm | No |
| Backlight | Yes |
| Maximum Bracelet Length | 160 - 210mm |
| Bracelet Material | Resin |
| Case Diameter | 44 mm |
Casio G-Shock GA-2100NNJ-8AJR
Delivery $43
Casio G-SHOCK Men's Resin 200M Water Resistant Analog Shock Resistant Quartz Watch GA-2100NNJ-8A gray
Delivery between 15–27 May $6
Casio G-shock Ga-2100nnj-8ajr Men's Gray Digital Watch,
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Great watch though sometimes difficult to see the LCD display. Very solid construction and quality. Of all the Casioaks the GM2100 is probably the best IMHO.
A really great looking watch.Legibility, both of the analogue and also the digital areas could be better. More lume, not just on the two hands but should be on the markers too and also a 'positive' rather than the negative LCD display would be easier to read. Difficult to read and therefore set LCD functions in low light conditions.Back-light coudl be brighter and time it stays on should longer (appreciate battery affect).
Was good looking and stylish when arrived. After a few months of using, strap and casing turns yellowish giving it a dirty look. Tried washing it and everything. Now its unwearable beacuse of its low quality dirty plastic look. It will take another 40-50 pounds to replace the strap and casing. Go for any solid colours if you need a long lasting quality
Love this watch. This G Shock looks awesome with a new and unconventional design. It has all the functionality you need as a daily sports watch without the hassle of Bluetooth. I can keep it on all day at workplace where Smartwatches are not allowed due to security concerns.
Solar function is definitely a plus, wrist strap looks great, dial is very clear to see. Functional light is definitely a bonus, digital frame even includes a date option. A very well rounded, tough analog watch! "Review Sweepstakes"
Beautiful watch -- the colors really pop -- and functional too. The Bluetooth hookup is super handy, as is all the settings. A casual statement piece. You can wear it with just about anything, and FOR just about anything -- G-Shocks are built tough! Highly recommend this gorgeous CasiOak, and the other color ways in this drop. Also: Review Sweepstakes
Love this watch! Feels great on the wrist and looks fantastic. Can take it anywhere without worrying it will get damaged (or run out of battery thanks to solar charging!). Bluetooth sync and world time function are super useful too. Would buy again.
I saw this watch in my local F Hinds store and I actually really like it. The Transparent White strap interested me the most.
Quality is amazing, much better than the one I was checking out in the shop, weight is noticeable, i had the GA-2100-1A1ER so i do feel the difference but feels amazing, i have it on 24/7.would recommend for sure.
This watch is great, has intelligence that i wasnt expecting. An calendar that doenst ever need updating, and notice it has hands but no winder on th side. Set the time digitally and your time zone and it will adjust th ehands automatically. You'll need to read the instructions as how to set the time zone etc correctly but its easy. Fantastic watch for the money.
| Alarm | No |
| Backlight | Yes |
| Maximum Bracelet Length | 160 - 210mm |
| Bracelet Material | Resin |
| Case Diameter | 44 mm |
Follow in the footsteps of Japan's legendary ninjas. GShock now takes you into the world of ancient Japanese martial arts, mystery and intrigue. Everything about this watch is inspired by these secret agents who worked undercover in the service of powerful shoguns and daimyo in ancient Japan. The Japanese spell "ninja" as follows: 忍者. 忍 is made up of elements that represent a blade over a heart, and 者 means "human". This combination indicates the dedication and tenacity required of every ninja. That same relentless toughness is at the heart of the GShock identity. Features a grey translucent strap and bezel reminiscent of fireball smoke, with hotstamped latticework in the style of chain armour. Katon no jutsu One of the clay jutsu arts used by ninjas to hide from and evade their enemies. Katon no jutsu uses fire to divert the enemy's attention, hide or create a distraction. This can be done, for example, by lighting straw or wood on fire, using fire arrows or ninja stars with gunpowder and a fuse.
Follow in the footsteps of Japan's legendary ninjas. GShock now takes you into the world of ancient Japanese martial arts, mystery and intrigue. Everything about this watch is inspired by these secret agents who worked undercover in the service of powerful shoguns and daimyo in ancient Japan. The Japanese spell "ninja" as follows: 忍者. 忍 is made up of elements that represent a blade over a heart, and 者 means "human". This combination indicates the dedication and tenacity required of every ninja. That same relentless toughness is at the heart of the GShock identity. Features a grey translucent strap and bezel reminiscent of fireball smoke, with hotstamped latticework in the style of chain armour. Katon no jutsu One of the clay jutsu arts used by ninjas to hide from and evade their enemies. Katon no jutsu uses fire to divert the enemy's attention, hide or create a distraction. This can be done, for example, by lighting straw or wood on fire, using fire arrows or ninja stars with gunpowder and a fuse.
in 3 offers
last seen 14 May 2026
The lowest price we last saw for Casio Gents G-Shock Ninja Watch GA-2100NNJ-8AER was $233.00 at Chrono24.com.au, compared across 3 retailers (last seen 14 May 2026). Prices may have changed since.
The all-time low we recorded was $139.00 on 15 Feb 2025.
Prices last updated 14 May 2026.
Casio Gents G-Shock Ninja Watch GA-2100NNJ-8AER
Follow in the footsteps of Japan's legendary ninjas. GShock now takes you into the world of ancient Japanese martial arts, mystery and intrigue. Everything about this watch is inspired by these secret agents who worked undercover in the service of powerful shoguns and daimyo in ancient Japan. The Japanese spell "ninja" as follows: 忍者. 忍 is made up of elements that represent a blade over a heart, and 者 means "human". This combination indicates the dedication and tenacity required of every ninja. That same relentless toughness is at the heart of the GShock identity. Features a grey translucent strap and bezel reminiscent of fireball smoke, with hotstamped latticework in the style of chain armour. Katon no jutsu One of the clay jutsu arts used by ninjas to hide from and evade their enemies. Katon no jutsu uses fire to divert the enemy's attention, hide or create a distraction. This can be done, for example, by lighting straw or wood on fire, using fire arrows or ninja stars with gunpowder and a fuse.
Follow in the footsteps of Japan's legendary ninjas. GShock now takes you into the world of ancient Japanese martial arts, mystery and intrigue. Everything about this watch is inspired by these secret agents who worked undercover in the service of powerful shoguns and daimyo in ancient Japan. The Japanese spell "ninja" as follows: 忍者. 忍 is made up of elements that represent a blade over a heart, and 者 means "human". This combination indicates the dedication and tenacity required of every ninja. That same relentless toughness is at the heart of the GShock identity. Features a grey translucent strap and bezel reminiscent of fireball smoke, with hotstamped latticework in the style of chain armour. Katon no jutsu One of the clay jutsu arts used by ninjas to hide from and evade their enemies. Katon no jutsu uses fire to divert the enemy's attention, hide or create a distraction. This can be done, for example, by lighting straw or wood on fire, using fire arrows or ninja stars with gunpowder and a fuse.
