SpecStudio
Click to inspect
Casio GST-S100G
Ref. GST-S100G · Sport
$330Stock unknown
Case
- Diameter
- 52.4mm
- Thickness
- 16.1mm
- Lug-to-lug
- 59.1mm
- Material
- Resin / Stainless steel
- Water resistance
- 200m
Crystal & dial
- Crystal
- Mineral
- Dial colour
- Black
Movement
- Type
- Quartz
Design language
- Case shape
- round
- Dial style
- matte
- Bezel
- fixed
- Bracelet
- rubber
- Hands
- baton
AI-detected from the product image
G-Shock collection · 101 watches
88 more in this collection
DWE-5600JBG-5600G-7900G-8900G-SHOCK G-STEEL GST-B500G-Shock GW-M5610GA-010GA-100GA-1000GA-110GA-1100GA-2000GA-2100GA-2110GA-2140GA-2200GA-400GBGA-700GA-710GBGA-800GA-900GA-B001GA-B010GA-B2100GA-V01GAS-100GBA-800UCGBA-900GBA-950GBD-200GBD-800GBD-H1000GBD-H2000GBM-2100AGBX-100GBX-H5600GD-010GD-100GD-120CMGD-350GD-400GD-B500GG-1000GG-B100XMGLX-5600KBGM-110GM-2100GM-2110DGM-5600GM-6900GM-700GGM-B2100SDGM-H5600GM-S2110GM-S5600PGGMA-P2100GMA-P2126WGMA-S110XGGMA-S120MFGMA-S140GMA-S2100GMD-B300GMD-S5610BBGMW-B5000GMW-BZ5000GDGPR-H1000GR-B300GST-B100GST-B1000DGST-B400GW-2310UGW-2320FPGW-5000HSGW-6900UGW-7900GW-9400GW-9500GW-B5600GW-M500AGW-M530AGWF-A1000GWF-D1000GWG-B1000GX-56BBRMRG-B2000MRG-B5000MTG-B2000MTG-B3000
2 colorways
The market
Market prices.
Retail$330
The forum market
Follow the asking price.
Active listings0Across watch forums
Closed · 90d0Asking-price history
No forum listings tracked for this watch yet.
Retail stock & market context
Casio on the secondhand market
+10.5%
2026 so far · +1.3% to +21.6% · 47 matched watches
In line with the index
Year-by-year readings →The connection engine
More like this.
The community take
Owners talk.
Owners widely praise the Casio GST-S100G for its appearance, noting it is more attractive in person and especially in sunlight, with some appreciating the gold accents. The solar charging function is highlighted as remarkably resilient, with multiple owners reporting the watch revived after years of inactivity simply by being placed in sunlight. One owner describes the band as extremely well-made and comfortable. The Casio GST-S100G is considered a beautiful watch that deviates from typical G-Shock aesthetics. One owner reports that the digital and analog time displays on their 7-8 year old GST-S100G do not match. Another owner noted their GST-S100G-1A displayed "CHG" in sunlight, indicating a depleted and uncharging battery after a month of sun exposure. On balance, owners rate the Casio GST-S100G highly for its striking aesthetics and exceptionally durable solar charging capability, which allows it to revive even after extended periods of disuse.
Open the discussion
On real wrists
No shots yet. Show how it wears.
The paper trail
The discussion