The Gulfman GW-9110-1JF and GW-9110 series are discontinued as of 2024, according to Casio Japan.
Size: Medium
Dimensions (L x W x H): 51 x 46.1 x 16.4 mm
Weight:Â 57 grams
Module: 3217 (instruction manual at casio.com)
Battery Type (Lifespan): Solar Rechargeable
Series Launch Year: 2007 (GW-9100), 2009 (GW-9110)
Notable Features: Tough Solar, Multi-Band 6, Tide and Moon Graphs
See full specifications for GW-9110-1JF under “Additional information” tab above.
Suggested Uses: Military, Ocean Sports, Outdoors
GW-9110 Versus G-9100
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The G-Shock GW-9110 Gulfmaster is an older Master of G model featuring titanium external parts for rust resistance. The tide graph is better than the one found on the G-9100 Gulfman, as it displays three levels for spring, intermediate, and neap tides. The GW-9110 is currently available only in Japan.
Tide Graph 
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G-SHOCK
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In stock
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Medium
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51 x 46.1 x 16.4
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57
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200-Meter Water Resistance, Rust Resistant, Shock Resistant
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Resin
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Resin, Titanium
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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, Direct Call UTC Time Zone
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DST On/Off
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Stopwatch
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1/100 second (first hour)
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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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1.5 or 3 Second Afterglow, 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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The G-Shock G-9100 is a Master of G model from 2007 featuring tide and moon graphs and external metal parts and button shafts made of rust-resistant titanium. It appears that the G-9100 may be discontinued and may not be available for much longer, but its status is not certain. The more advanced GW-9110 Gulfman with Tough Solar and Multi-Band 6 remains an active model in Japan.

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G-SHOCK
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In stock
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Medium
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51 x 46 x 16.4
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53
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200-Meter Water Resistance, Rust Resistant, 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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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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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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3 Multi-Function with 1 Snooze
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Hourly Time Signal
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1.5 or 3 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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None
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7 Years
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Flash Alert
GW-9110-1JF on Amazon eBay
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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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