GMA-S Variant, if using all original Casio parts. Meaning chapter ring, hour marker, hands and dial. It will have a rim of crevice around the chapter ring. While comparing with other series after completing the build. It is not as full. But does not impact functionality. Only aesthetically.
GA and GMA-S original chapter rings also has an visible cut-out on 1 and 7 o'clock position. As an inevitable flaw from Casio's design, we suggest customers getting our version of upgraded ones. If you have strong concern of such.
Because Casio 2100 models are made differently and in many different series.
We provide different cases for them. And THEY ARE NOT COMPATIBLE WITH EACH OTHER.
The only multi-compatible casing is for both GM-2100 and GBM-2100 series.
Meaning this particular casing can house both GM and GBM models' modules.
Other three casing, for GA-2100/GMA-S2100/GA-B2100, are 1 to 1 compatible only.
Lastly, none of our modding kits are compatible to GM-B2100series.
Therefore, PLEASE CHECK MODEL FIRST BEFORE PURCHASE!!!
SPECS:
Case Material: 316L Stainless Steel (Buttons Pre-installed on cases) or
Case Material: Grade 2 Titanium (Buttons Pre-installed on cases)
Coating: Metal Hardware Fully IP Coated, Rated over 980HV on Vickers Hardness Test