
Casio F-91W
Straps and Screen Protection
18 mm adapter fit
Fit 18 mm to 20 mm adapters for a 20 mm split NATO strap. Add a screen protector sized for the F-91W.




Mods and Parts
Explore straps, cases and other upgrades for each watch. Before ordering, check the full model number and fit details on the seller’s listing.
Need tools for a build? See my watch modding tools.

Casio F-91W
18 mm adapter fit
Fit 18 mm to 20 mm adapters for a 20 mm split NATO strap. Add a screen protector sized for the F-91W.





Casio AE-1200 Royale
Budget bracelet swap
A complete SKMEI 1335 can cost only a few dollars, making its metal bracelet the cheapest swap I have found at this size. Keep the rest of the watch to use or pass on.





Casio F-94W Bumblebee
Give this tiny Casio a bold new look. Start with the easy V1 parachute strap swap, or build the full V2 with a NATO strap, yellow filter and brighter backlight. Follow the videos to make your own.








On wrist

Casio A500W
18 mm bracelet
My favourite flat-link bracelet is slim and comfortable. Choose the cheaper separate bracelet, or buy the original Casio A700W for its genuine bracelet. Check the end links before ordering.




G-Shock GW-M5610U
Most Popular Mod
Metal Case and Bracelet
A metal case and bracelet give the square a more solid, full-metal look. This kit has versions for 5600-series, GW-M5610 and GMW-B5000 watches. Match the version to your exact model before ordering.



G-Shock GMW-B5000
Model-specific parts
Choose a compatible bezel or add 22 mm lug adapters for a Zulu or NATO strap. Check GMW-B5000 fit on each listing.





SKMEI 1628
Hands-on mods
See my LCD polariser conversion and the fit test with a genuine Sand Land G-Shock bezel and a 16 mm Combi bracelet on this SKMEI 1628.





SKMEI 1998
Ghost Watch Mods
Pair the clear SKMEI 1998 case with a Synoke 9619 module. Its flashing backlight cycles through bright colours. Hold the light button to lock one colour in place. For Rainbow Ghost, add a colour filter and a clear rainbow bracelet.







Casio LF-20W
Hands-on custom build
I rebuilt my white LF-20W with a new case, strap and lens. I reused its original caseback and gasket. The kit was supplied free for the video. Check what the seller includes.






On Wrist

SANDA 3192 Rebel Pilot
Fit checked on similar model
The review video includes my 18-to-22 mm adapter and orange parachute strap swap on the earlier Humpbuck Rebel Pilot. I have not confirmed the fit on the SANDA 3192.




G-Shock GW-B5600 Sand Land
Fitted to my Sand Land
I fitted a plastic-and-steel Combi bracelet to my positive-display GW-B5600SL-5 using the original spring bars. Match the bracelet and spring-bar fit to your exact square before ordering.

