G-Shock Gulfmaster Ocean Concept Watch Review - GWN1000B

March 26, 2015 6 Comments

If you play sports whether it's snowboarding, surfing, skydiving, diving or just globe trot, chances are a majority of you own a watch to tell time along with a variety of other functions that watches come with nowadays. The capabilities of watches are pretty endless, with features such as temperature gauge, compass, barometer, altimeter, chronograph, timer, world clock functions, tide functions, stopwatch, alarm settings, gps capabilities and a whole lot more. It's insane what these timepieces can do nowadays.

One watch in particular we want to talk about is the Casio G-Shock Gulfmaster Ocean Concept GWN-1000B. One of our team members over here at Global Odyssi shelled out the cash and bought one of these beauties. We have to say we are more than impressed.

At first glance this watch looks impressive and definitely stands out on your wrist with measurements of 44.9mm (L) x 55.8mm (W) x 16.2mm (H) with a total weight of 101 grams. At first glance the impression you get is that this watch is a solid timepiece that can take pretty much take any punishment you want to give it, after all it's a G-Shock. To back that statement up, here are a few specs on how tough this watch is:

- 200M Water Resistant
- Shock Resistant
- Thin analog movement made possible by hybrid mounting protects against damage and enables auto home position correction that helps keep you on time all the time.
- Case / bezel material: Resin / Stainless steel
- Resin Band
- Tough Solar ensures stable operation even when using power-hungry functions.

If you need a little more convincing go ahead and do a search on G-Shock watches, they pride themselves on being the toughest watches on the planet to take on any adventure you want to throw at them.

Toughness aside, this watch has a long list of functions that would impress the most seasoned explorer and convince them to have a yard sale on the gadgets this watch would replace.

This now begs the question....What can this watch do? To be honest the list would be shorter if you asked....What can this watch NOT do?

  • Digital Compass - Measuring range: 0 to 359 degrees
  • Altimeter - –700 to 10,000 m (–2,300 to 32,800 ft.) Displayed in either meters or meet.
  • Barometer - 260 to 1,100 hPa (7.65 to 32.45 inHg) Displayed in either hPa or inHG.
  • Thermometer - –10 to 60°C (14 to 140°F) Displayed in Celsius or Fahrenheit
  • Moon Data - Moon age of the specific date
  • Tide Graph - tide level for specific time and date
  • World Time - 29 time zones with coordinated universal time, daylight savings time on/off, Home city/Word time city swapping
  • 1/100-second Stopwatch
  • Countdown Timer
  • 5 Daily Alarms
  • Battery Level Indicator
  • Power Saving - when left in the dark the display goes blank and hands stop moving
  • Full auto-calendar to year 2099
  • 12/24 hour format
  • Time calibration signal reception with manual and auto receive (up to 6 times per day
  • Double LED Light - LED light for the face and backlight for the digital display
  • Neobrite - a luminous coating that provides long-term illumination in the dark after short exposure to light (Applied on the our, minute, second hands and hour markers)
  • Solar powered - never needs a battery

A long list of features that are quite impressive.

  • The sensor sits on the left of the watch at the 9 hour a little too close to the wrist for accurate temperature readings. 
  • We conducted a test with the watch on the wrist which first gave a reading of 88.4 degrees. We then took the watch off for 
  • 30 minutes and got a reading of 77.4 degrees. Body heat definitely plays a huge factor in temperature readings. No other functions are affected by this close proximity to the body.
  • When toggling through functions in the dark, the display backlight turns off making it hard to see which one is next.
  • The size of the watch does not make it ideal to fit under your wetsuit (this may be a con to some of you).


  • The features galore this watch has packed into it.
  • Easy setting of functions with a pull of the crown and a turn to the desired date, time, setting, etc (No button holding and then pressing numerous buttons to get to your desired setting).
  • Accurate readings for Barometer, Altimeter, Compass and Tide functions.
  • Ability to manually calibrate Barometer, Altimeter and Compass settings for 100% accuracy for your location.
  • Setting Tide function is easy, set the High tide in your desired location and the watch does the rest.
  • Future Tide feature.
  • Neobrite and Double LED light functions give abundant brightness for use in the dark.
  • Setting time for your location is hassle free, select your city code and you're done, no guessing what time it is to set your watch. (ie. NYC, LAX, CHI, HKG, SYD, UTC etc.)
  • Ability to have two time zones set simultaneously.
  • Accurate and consistent measurement readings through all the functions.
  • Fly-back function (Hands move away from LCD screen during measurements)
  • A super cool bad ass looking watch that everyone will notice on your wrist.

Whether you are a globe trotter, surfer, skier/snowboarder, hiker, diver, expeditionist, avid camper, mariner or all around waterman, you can use a watch like this.  The features alone can slim down your gearbox and lighten your load.   The Gulfmaster Ocean Concept watch is one of the best all around watches we have seen that incorporates so many functions into an easy to use machine that can be used in any setting from serious to casual.

Be sure to download our FREE Surfers First Aid Manual on iTunes: Click Here

Shop our First Aid Kits at www.GlobalOdyssi.com.

6 Responses


February 24, 2017

This is a fantastic product and Review is also fantastic. Great looks, having tons of features and robust. But be careful with the metallic face !
Mukul Kashyap
Mukul Kashyap

December 20, 2016

Madly in love with this watch, awesome looks & features plan to have it in my collection soon!


August 17, 2016


Arun George
Arun George

July 23, 2016


Mike Demonbreun
Mike Demonbreun

February 04, 2016

Bought the G-Shock Gulfmaster and have been thoroughly impressed with the watch. Very easy to read and the new crown setting helps make adjustment quick. Soon to be living in Florida and thought it would be a nice watch to have as the salt water is not friendly to my nice dress watch. Only draw back is the buckle which does not offer a more snug fit. Other than that I love my new Gulfmaster.

Geoffry Steiner
Geoffry Steiner

December 02, 2015

I just purchased this watch, one word describes it clearly “OUTSTANDING”….i have many quality watches, they are all somewhere on my desk. After 2 weeks, its the only one i wear now. What else do you need!!!

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