SSK Slim Caseback: Brushed Finish
For builds where a thinner case matters more than a window into the movement, our SSK Slim Caseback: Brushed Finish is perfect for the job.
This solid caseback drops a whopping 1mm off the stock display caseback’s thickness (1.75mm thickness vs 2.75mm stock display caseback), tightening up the overall case stack for a lower, more balanced wrist presence while keeping the same water resistance as OEM.
Caseback Specifications:
Water Resistance: 100m
Only compatible with Seiko 5 Sports (SKX Series) SSK GMT Collection: SSK001, SSK003, SSK005 etc with a stock 4R34 movement.
Fits the Seiko 5 Sports SKX Sports Style GMT only (42.5mm case with rotating 24-hour bezel):
For a stock 4R34 movement only.
SSK001, SSK003, SSK005, SSK017, SSK019, SSK021, SSK033, SSK035, SSK036
Limited editions: SSK027, SSK029, SSK031, SSK043, SSK046, SSK047, SSK051, SSK053, SSK055, SSK057
Not compatible with the 5 Sports Field GMT (SSK023, SSK025, SSK059) or the Presage GMT (SSK009, SSK011, SSK013, SSK015, SSK037, SSK039, SSK041, SSK049).
It looks great exactly what I wanted.
Super clean and easy to install caseback
Very clean and easy to install
The case back makes for a perfect finish to a build. Really impressive quality, perfect fit!
Installed SKX Slim Sapphire caseback on NMK949 Miyota Field case. Fit well, no issues. Overall thickness of this assembly is only 10.3mm.
Loving the entire build, thanks again Namoki team!
Installed this on my SSK001 and it made a big difference in case height. Easy installation (make sure to order new caseback gaskets too, and lightly grease them beforehand) but it shaved a lot of the unnecessary height off the case. Sits MUCH flatter on the wrist now.
I have used the caseback for my rose gold SRPE. It’s thin as claimed and thickness between crystal (flat) and the caseback is around 11.2 mm.
I have these case backs on all of my watch builds. They look great!
Part of why I love collecting and building watches is the fact that they are automatic and mechanical. Being able to see that with a display caseback is the best. Love this component and it will always be a part of any build I do.
Really good quality
Perfect fit and finish, installed it on the black pvd case and even tho the blacks aren't the same they go so well together
Perfect caseback for your build - Light/clean and slim - Wanted to show of my NE15C movement so this was perfect...
I built this watch as a gift for a friend and wanted him to get the full effect of the mechanical movement. Now I feel like I need one for myself!
I like the slimmer profile and weight savings with this, but I mostly got it to give a better match for a gunmetal watch build. This matched the build and gave better water resistance than the gunmetal options I could find elsewhere.
Perfect fit!
This was a great product to finish my gold skeleton project for a NH71 watch that is a little dressy. I rarely place display caseback, but wanted to utilize for his time. This was a nice one that worked with the other case that I used from Modmode. Great caseback would buy again.
I use it with the srpe model. I had no problems with fluid leaking. I'm satisfied.
Yes, this is tad thicker than the solid metal caseback that came with the case I bought. But frankly, I'm not sensitive that I can tell the difference when it's strapped to my wrist. Perhaps there are those who can, but I'm not one of them.
The specialness of being able to see the decorated rotor that I also purchased and to be able to see the balance wheel turning is for me, and me alone. People I meet won't ever see it or know that it's there, my partner (who is one of the few people who ever sees the watch when it's not on my wrist) barely notices it, but I see it every time I put the watch on, and it just makes me feel good that it's there because it was a treat for me.
A very beautiful and light caseback cover. I decided to go for it and create a brushed finish. Approved from JRACUSTOMS (aka gooniesiv)
I think that all mechanical watches should actually have a glass back. The timepieces are beautiful works of art that can also be seen in their simplest form. It is always a pleasure to take off the watch to view the interior.
A solid caseback that isn't too thick whilst maintaining 100m Water Resistance (important for desk diving), fits my OP case for my explorer I build.
ATTTW5 - 5%
@allthetimemods on Instagram if you'd like to see my mods/builds.
