New Releases · 2026-10-01
Blue sapphire gives MR-G a new construction challenge.
Casio’s 20-piece MRG-D5000 combines a sapphire bezel with a structure designed to protect it from impact.
By Chronolume digest · Original English summary · Based on Casio Computer Co., Ltd.
What to know
Casio has announced the MRG-D5000, a G-SHOCK MR-G limited to 20 pieces worldwide. Its blue sapphire bezel changes more than the appearance: Casio says the material required a screwless assembly to avoid stresses that could crack it.
The manufacturer describes a multi-part protective structure developed after analysing how impacts reach the sapphire components. Blue sapphire also appears in the screw-lock caseback, alongside an individual serial number. Gallium Tough Solar supplies the charging system. These engineering claims come from Casio’s announcement; Chronolume has not independently tested the watch. The release also introduces two related sapphire-accented models, which should not be confused with this 20-piece edition.
At a glance
| Model | MRG-D5000 |
|---|---|
| Edition | 20 pieces worldwide |
| Feature | Blue sapphire crystal bezel |
Source & attribution
Casio Computer Co., Ltd. · Published 2026-10-01 ↗
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