lug2lug
BrowseCompareNewsCommunityMy Watches
BrowseCompareNewsCommunityMy Watches
Theme
Popular microbrands:Christopher Ward·Baltic·anOrdain·Atelier Wen·Boldr·Bremont·Dan Henry·DOXABrowse all →
Best, by the specs:Diver under $2,000·Dress under $5,000·Chronograph under $5,000·Best sport watches·GMT under $5,000·Field under $500·Pilot under $2,000·Casual under $1,000All rankings →
Glossary:Lug-to-Lug·Water Resistance·Chronograph·GMT·Automatic·LumeBrowse all →
Tools:Collection tracker·Wrist-fit calculator·Selling calculator·What should I buy?·Market index·iPhone app
Lug2Letter
Watches worth knowing about, weekly.
Curated discoveries, founder spotlights, and the occasional deep-dive.
Get the app
Download on theApp StoreGET IT ONGoogle Play
TermsPrivacyDelete accountCopyrightDisclosuresContactContribute

Independent reference site · not affiliated with any brand · contains affiliate links

© 2026 Lug2Lug LLC · Prices are estimates and not offers

Loading watch
Home/Browse/Casio/GR-B300
SpecStudio
Casio GR-B300
Click to inspect
Casio · G-Shock

Casio GR-B300

Ref. GR-B300 · Sport

$330Stock unknown

513 matched eBay listings

Case

Diameter
54.7mm
Thickness
15.7mm
Lug-to-lug
59mm
Material
Bio-based Carbon / Bio-based resin / Sta
Water resistance
200m

Crystal & dial

Crystal
Mineral
Dial colour
Black

Movement

Type
Quartz

Design language

Case shape
round
Dial style
matte
Sub-dials
2
Bezel
fixed
Bracelet
rubber
Hands
baton

AI-detected from the product image

G-Shock collection · 102 watches

AWG-M100
AWG-M10046.4mm
DW-5000R
DW-5000R42.3mm
DW-5040RX-7
DW-5040RX-742.8mm
DW-5600
DW-560042.8mm
DW-5610
DW-561043.8mm
DW-5900
DW-590046.8mm
DW-6600
DW-660050mm
DW-6900
DW-690050mm
DW-9052
DW-905243mm
DW-9052GBX
DW-9052GBX46.5mm
DW-B5600
DW-B560042.8mm
DW-H5600
DW-H560044.5mm
89 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-400GBA-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-H1000GST-B100GST-B1000DGST-B400GST-S100GGW-2310UGW-2320FPGW-5000HSGW-6900UGW-7900GW-9400GW-9500GW-B5600GW-M500AGW-M530AGWF-A1000GWF-D1000GWG-B1000GX-56BBRMRG-B2000MRG-B5000MTG-B2000MTG-B3000
Alternatives

01The market

Market prices.

Retail$330

eBay listings

  • CASIO Watch Analog Black GR-B300Pre-owned - Good · JP$220↗
  • CASIO G SHOCK GR B300 Gravity Master Tough Solar with BluetoothPre-owned - Good · JP$221↗
  • CASIO GR-B300 Case Size 6 ×5.5cm Used Watch #13814Pre-owned - Good · JP$225↗

Lowest displayed prices first.

Search eBay ↗

Matched listings from our latest checks; eBay may show additional results. We may earn a commission through these links at no extra cost to you.

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 →

02The connection engine

More like this.

Jorg Gray Watches JG2500

Jorg Gray Watches

JG2500

52mm · Quartz$595

Straton Straton Daily Driver

Straton

Straton Daily Driver

44mm · Quartz$299

AVI-8 Hawker Harrier Matador Chronograph

AVI-8

Hawker Harrier Matador Chronograph

45mm · Quartz$330

Elliot Brown BLOXWORTH: 929-002

Elliot Brown

BLOXWORTH: 929-002

44mm · Quartz$655

Tissot Supersport Chrono

Tissot

Supersport Chrono

45.5mm · Quartz$575

Jorg Gray Watches JG9700

Jorg Gray Watches

JG9700

46mm · Quartz$595

View all alternatives

03The community take

Owners talk.

“

The Casio GR-B300 is praised for its gorgeous and highly readable analog dial, with the solar charging system noted as robust. Owners find it a very large but surprisingly light watch, with some reporting it fits smaller wrists. The fighter jet-inspired design and dual-time function are highlighted as appealing, offering good value. However, one owner found the build quality noticeably lower than other G-Shocks, with materials feeling less solid. The propeller feature is described as a fun gimmick, and the watch is considered full-featured but large. Overall, owners rate the Casio GR-B300 highly for its readable analog dial and surprisingly light wearability despite its size.

Synthesized from 7 sources
Reddit·6↗
Fratello↗
Open the discussion

On real wrists

No shots yet. Show how it wears.

04The paper trail

Ask the communityStart a discussion about the GR-B300: get takes from other collectors.Ask →

05The discussion

Talk about the Casio GR-B300.