G-Shock · Casio
Casio G-Shock Mudmaster GG-1000-1A5
Ref. GG-1000-1A5 · Amazon ASIN B01E45GMMQ
The twin-sensor Mudmaster: compass and thermometer, mud-resistant buttons, 200 m water resistance, 55.3 mm resin case. Battery powered, not solar.
Case diameter55.3 mm
Lug-to-lug56.2 mm
Thickness17.3 mm
Warranty1 years
Fits wrist from20.2 cm (8.0″)
Amazon price · new
$244.44
List price $385.00
Value Score
48 of 100
Spec points
49
vs. type median
+163% ($93)
Amazon sales rank
#306 wrist watches
Not in stock today (ships later) · sold by Amazon.com. Price as of November 3, 2026, 18:15 UTC.
Wrist fit
Will the Casio G-Shock Mudmaster GG-1000-1A5 fit your wrist?
Enter your wrist circumference. The drawing scales the case (55.3 mm across, 56.2 mm lug-to-lug) against the flat top of a wrist that size, using the 3.6× lug-to-lug rule from our fit guide. Needs JavaScript; the rule itself is on the fit guide.
Specifications
What you get
Published manufacturer specifications. Fields we could not verify are left out rather than guessed.
ReferenceGG-1000-1A5
MovementDigital quartz (analog-digital)
CrystalMineral
Water resistance200 m
Case diameter55.3 mm
Lug-to-lug56.2 mm
Thickness17.3 mm
Strap / braceletResin
LumeYes
Calendardate, day
Warranty1 years
Fits wrist from20.2 cm (8.0″)
Value Score
How the 49 spec points add up
Value Score = 100 × √(spec points per dollar ÷ the best ratio among G-Shock watches in stock on Amazon today). Full methodology.
Digital quartz+14
Mineral crystal+8
200 m water resistance+17
Resin strap+3
Luminous hands and markers+4
Date+2
Day+1
Spec points49
FAQ
Questions about the Casio G-Shock Mudmaster GG-1000-1A5
How much does the Casio G-Shock Mudmaster GG-1000-1A5 cost on Amazon?
As of November 3, 2026, 18:15 UTC, the Casio G-Shock Mudmaster GG-1000-1A5 (GG-1000-1A5) is listed new on Amazon at $244.44, sold by Amazon.com. That is 163% above the median of the 8 G-Shock watches we track with a live price ($93). Prices change; the price shown on Amazon at checkout applies.
What is the Value Score of the Casio G-Shock Mudmaster GG-1000-1A5?
Value Score 48. It earns 49 spec points (Digital quartz (analog-digital), mineral crystal, 200 m water resistance) and today's price of $244.44 gives 20.0 points per $100. The score is 100 times the square root of that ratio divided by the best ratio among G-Shock watches in stock on Amazon today. The formula is published on our methodology page.
What wrist size fits the Casio G-Shock Mudmaster GG-1000-1A5?
The case is 55.3 mm across. We do not have a verified lug-to-lug figure for this reference, so we do not publish a wrist-fit estimate.
Read next
Guides that apply to this watch
- Ranked among watches under $300
- This listing is below its list price today: all watches below list price
- What the water-resistance rating actually permits
- Sapphire vs Hardlex vs mineral: what the crystal changes
- Will it fit your wrist? The lug-to-lug rule
- Automatic vs solar vs quartz: accuracy and running cost
- Watch gift guide by budget and recipient
- Buying a watch on Amazon: sellers, warranty, returns