List Price: $160 (GW7900-1)
Size: Medium
Dimensions (L x W x H): 52.4 × 50 × 17.7 mm
Weight:Â 71 grams
Module: 3193 (instruction manual at casio.com)
Battery Type (Lifespan): Solar Rechargeable
Series Launch Year: 2009
Worn By: Michael B. Jordan (Without Remorse)
Notable Features: Tough Solar, Multi-Band 6, World Time, 1/100-Second Stopwatch, Timer, 5 Daily Alarms, Full Auto EL Backlight
See full specifications for GW7900-1 under “Additional information” tab above.
Note: The G-7900 does not have Tough Solar and Multi-Band 6 like the GW-7900, but that is not the only difference, as many of the other functions are different than the GW-7900.
Suggested Uses: Military, Ocean Sports, Outdoors
Recent GW-7900 Releases and Gallery:
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MICHAEL-B-JORDAN-G-SHOCK-WATCH
MICHAEL-B-JORDAN-G-SHOCK-WATCH
8Expert Score
G-Shock GW-7900 Rating by G-Central
The GW-7900 offers Tough Solar and Multi-Band 6, but it lacks some of the unique features of the G-7900.
PROS
- Tough Solar and Multi-Band 6 means less maintenance.
- Large buttons can be pressed with gloves.
- Tide and moon graph is useful for ocean sports like surfing and fishing.
- Ultra-rugged style.
CONS
- Lacks some of the unique features of the G-7900 such as low temperature resistance, dual stopwatches, multi-function alarms (only daily), flash alert, and longer EL backlight afterglow.
- It is one of the thicker G-Shock models.
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The G-Shock GW-7900 is a popular and affordable G-RESCUE model with solar power, automatic radio time correction, and time and moon graphs. The GW7900-1 is regularly available at a large discount (for around $100-$110) from some American retailers.

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G-SHOCK
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In stock
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-
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Medium
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52.4 x 50 x 17.7
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71
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200-Meter Water Resistance, Shock Resistant
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Resin
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Resin
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Resin
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Mineral
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Rechargeable
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Tough Solar
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Battery Level Indicator
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Power Save
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Multi-Band 6
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3 Level Tide Graph, Tide Graph
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Moon Data
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World Time
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31
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48 + UTC
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DST On/Off
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Stopwatch
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1/100 second
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23:59’59.99”
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1st-2nd place times, elapsed time, split time
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Countdown Timer
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1 second
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24 hours
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1 minute to 24 hours
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1 minute
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5 Daily with 1 Snooze
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Hourly Time Signal
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Afterglow (Fixed), EL (Electro Luminescence), Full Auto, LCD Backlight
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Blue Green
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Full Auto Calendar to 2099
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Button Tone On/Off
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12/24-Hour Format
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Alarm
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-
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The G-Shock G-7900 has an ultra-rugged style with four front screws and unique features like a tide and moon graph, low temperature resistance, two stopwatches, 5 multi-function alarms, and flash alerts. It sits on the border between a medium and large size.

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G-SHOCK
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In stock
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Medium
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52.4 x 50 x 17.7
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68.2
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200-Meter Water Resistance, Low Temperature Resistant (-4F/-20C), Shock Resistant
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Resin
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Resin
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Resin
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Mineral
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CR2025
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-
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Tide Graph
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Moon Data
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World Time
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29
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48
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DST On/Off
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2 Stopwatches, 1 with 5-second countdown auto start, Stopwatch
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1/100 second
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999:59’59.99”
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1st-2nd place times, elapsed time, split time
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Auto-repeat, Countdown Timer, Progress beeper
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1 second
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24 hours
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1 minute to 24 hours
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1 minute
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5 Multi-Function with 1 Snooze
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Hourly Time Signal
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3 or 5 Second Afterglow, Auto, EL (Electro Luminescence), LCD Backlight
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Blue Green
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Full Auto Calendar to 2099
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Button Tone On/Off
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12/24-Hour Format
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Countdown Timer, Stopwatch
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2 Years
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Flash Alert
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Some specs for individual models may differ within a series, such as price, materials, weight, etc. Dollar prices are in U.S. currency unless otherwise noted. Click the link icons in the gallery images for articles on specific models. Gallery images with "(casio.com)" are linked to an official Casio product page. Follow your country's official G-Shock site (gshock.casio.com) for more release information.
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8Expert Score
G-Shock GW-7900 Rating by G-Central
The GW-7900 offers Tough Solar and Multi-Band 6, but it lacks some of the unique features of the G-7900.
PROS
- Tough Solar and Multi-Band 6 means less maintenance.
- Large buttons can be pressed with gloves.
- Tide and moon graph is useful for ocean sports like surfing and fishing.
- Ultra-rugged style.
CONS
- Lacks some of the unique features of the G-7900 such as low temperature resistance, dual stopwatches, multi-function alarms (only daily), flash alert, and longer EL backlight afterglow.
- It is one of the thicker G-Shock models.