Casio G-Shock Gulfman G-9100-1DR

From G-SHOCK, the watch that delivers the ultimate in modern personal timekeeping, comes a GULFMAN model that packs powerful features and functions into a tough rest-resistant configuration. All external metal parts, including screws, back cover, buckle, and even button shafts are made of titanium alloy for total protection, even in seawater environments. The band is secured to the case by milled titanium alloy screws, while the form of the forged titanium alloy back provides outstanding impact resistance. The band is configured so it does not adhere to the wrist when wet. Functions include Tide Graph for current tide conditions at a glance, Moon Phase Graph for graphic display of moon phases, and Dual Illuminator for simultaneous illumination of the display and its periphery.

Milled Band Screws
Special Titanium Alloy Button Shafts

DUAL ILLUMINATOR
Dual EL panels provide simultaneous illumination of the LCD panel and the dial for better readability when available lighting is dim.

RUST-RESISTANT STRUCTURE
Built specially for seafaring use, Gulfman employs titanium construction for all metal parts that come into contact with air, from the bis, case back and buckle to the button shafts. A titanium bis has also been adopted for the band attachment to provide rust-resistant countermeasures down to the smallest detail.

Mineral Glass
Shock Resistant
Rust Resistant
200-meter water resistance
Case / bezel material: Resin
Resin Band
Electro-luminescent backlight
Auto light switch, dual illuminator, afterglow
Flash alert
Flashes with buzzer that sounds for alarms, hourly time signal, countdown timer time up alarm, countdown timer progress beeper, and stopwatch auto start
World time
29 time zones (48 cities), city code display, daylight saving on/off
Moon data (moon age of the input data, moon phase graph)
Tide graph (tide level for specific date and time)
1/100-second stopwatch
Measuring capacity: 23:59'59.99''
Measuring modes: Elapsed time, split time, 1st-2nd place times
Other: 5-second countdown auto start
Countdown timer
Measuring unit: 1 second
Countdown range: 24 hours
Countdown start time setting range: 1 minute to 24 hours (1-minute increments and 1-hour increments)
Others: Auto-repeat, progress beeper on/off
Multi-function alarms
3 independent multi-function alarms (2 one-time alarms and 1 snooze alarm)
Hourly time signal
Full auto-calendar (to year 2099)
12/24-hour format
Button operation tone on/off
Regular timekeeping: Hour, minute, second, pm, month, date, day
Accuracy: ±15 seconds per month
Approx. battery life: 7 years on CR2025
Size of case: 51 X 46 X 16.4 mm
Total weight: 53 g