The first G-Shock watch made its debut in 1983, created by a team led by Casio designer Kikuo Ibe. Their goal was to create a a tough, worry-free sport watch based on the “Triple 10” development concept: shock resistance to a 10-meter drop, water-resistance up to 10 bar (100 meters), and a ten-year battery life. The first model was a resounding success and set the bar for many future models to come. G-Shock became an extremely popular iconic brand and continued to add innovative new features over the years. Here is a summary of the best G-Shock features currently available.

Standard G-Shock Protection Features

All G-Shock watches feature standard G-Shock Protection: Shock Resist and 200 meter water-resistance. Most models do not have a 10-year battery-life anymore although some do have an extended battery life or a rechargeable battery. Models in the Baby-G line for women also have Shock Resist and at least 100 meter water-resistance. All G-Shock and Baby-G watches feature a quartz movement with accuracy of +/- 15 seconds per month. Other common features that most (but not all) models have include a stopwatch, countdown timer, 12/24 hour format, auto calendar, alarm, hourly time signal, and backlight.

Tough Solar and Multi-Band 6

Tough Solar and Multi-Band 6 are mid-range G-Shock features. They are now common in many models and are the most popular of the “extra” G-Shock features. The Tough Solar feature consists of a rechargeable battery and a solar panel on the face of the watch, allowing the watch to charge from exposure to light. The battery can last up to 10-months on a full charge. As most Tough Solar watches will be exposed to light on a daily basis and will be charging continuously, a dying battery is not a concern, but at some point far down the road the battery may fail and require changing.

Multi-Band 6is also known as Wave Ceptor or atomic timekeeping and allows the watch to synchronize every day through radio waves coming from six transmission stations worldwide. This insures that the watch is always accurate. These stations are located in the USA, United Kingdom, Germany, Japan (2), and China. Not all locations in the world are able to receive these radio signals.

Bluetooth

Bluetooth connectivity allows certain G-Shock models to sync with smartphones and display information on the watch such as call, SMS, and email alerts. It also allows the watch to sync with the time on the smartphone, allows the smartphone to control the settings of the watch, and allows the watch to control music playback on the smartphone. Models with Bluetooth include the GB-6900B, GBX-6900B, and GBA-400 G’MIX. The Bluetooth feature hasn’t seem to caught on but hopefully Casio will continue to improve on this technology.

Tide and Moon Phase Graph

G-Shock watches with tide and moon phase displays are popular with surfers, fishermen, and other ocean sports enthusiasts. Models with this feature include the GLX-5600 and GWX-8900 G-LIDE, G-7900 and GW-7900 G-RESCUE, GWF-1000 Frogman, and GWN-1000 Gulfmaster.

Twin Sensor and Triple Sensor

The Twin Sensor includes a digital compass and thermometer and the Triple Sensor adds a barometer and altimeter. Models with the Twin Sensor include and the G-9300 Mudman and the GA-1000 Aviation series. Triple Sensor watches include the GW-9400 Rangeman, GWN-1000 Gulfmaster, and the upcoming GWG-1000 Mudmaster.

Triple G Resist

Triple G Resist is a high-end feature for analog G-Shock watches featuring resistance to shock from gravitational dropping force, centrifugal gravity (G-force), and vibration. Models with Triple G Resist include the MTG-S1000 MT-G, the GW-A1000 Aviation Series, and the GPW-1000 Gravitymaster. Some analog models like the GWG-1000 Mudmaster feature resistance to vibration.

GPS Hybrid Wave Ceptor

GPS Hybrid Wave Ceptor combines Multi-Band 6 radio time calibration with GPS technology. This allows the watch to receive the time from GPS signals when it’s outside the range of the radio transmission stations, and allows the watch to set the time automatically based on the time zone of its location. The GPW-1000 Gravitymaster was the first G-Shock to include the GPS hybrid technology. The top of the line MRG-G1000 also has this feature.

ISO 200 Meter Certification

While all G-Shock watches can handle recreational scuba diving there is only one model that is ISO certified to 200 meters. That watch is the Frogman which is the premier G-Shock diving watch. The current Frogman model is the GWF-D1000.