pre-owned watches

All-time Favorite Vintage Casio G-Shock Frogman DW-8200

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online watch store, Frogman became very popular among G-Shock collectors for 2 decades. G-Shock Fans knows that the Frogman is a high-end model of the Casio G-Shock line of watches.  The very first model of G-Shock Frogman DW-6300 has released in 1993.

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The second-generation G-Shock was released in 1995. The second-generation “FROGMAN” of G-SHOCK’s waterproof specification for 200m diving that conforms to the ISO standard that can also be used for scuba diving. The round asymmetrical case, which is the first to use lightweight and rust-resistant titanium, is also equipped with an EL backlight. Functions such as the diving function and log data memory have also been enhanced. The case back is engraved with a diving frog motif.

The Frogman has an asymmetric shape and is attached eccentrically on its straps. It is specially made as a diving watch for scuba divers and is the only ISO 6425-compliant G-Shock line with a 200 m Divers rating.

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  • Specifications – functions
    – Screw back
    – Impact-resistant structure (shock resist)
    – Waterproof for ISO200m diving
    – Resin band
    – Diving function (diving time: measurement range 23 hours 59 minutes – – 59 seconds, the display unit 1 second, interval time: measurement range 23 – hours 59 minutes (59 seconds), the display unit 1 minute)
    – 1 log data (dive start time, dive time) memory
    – Stopwatch (1/100 second, 24-hour counter, with split)
    – Timer (set unit: 1 second, maximum set: 24 hours, 1/10 second unit measurement, auto-repeat)
    – 3 multi-alarms, time signal
    – Fully automatic calendar
    – 12/24 hour system display switching
    – EL backlight (with afterglow function)
    – Accuracy: Average monthly difference ± 15 seconds
    – Battery life: about 2 years
    – EL: blue-green
  • The G-Shock is a line of watches manufactured by the Japanese electronics company Casio, designed to resist mechanical stress, shock and vibration. G-Shock is an abbreviation for Gravitational Shock. The watches in the G-Shock line are designed primarily for sports, military and outdoors-oriented activities; nearly all G-Shocks are chronographs, with either a digital display or a combination of analogue and digital. Other features such as countdown timer, world clockalarmselectroluminescent backlight and water resistance are included in most models. Newer high-end models in the line also feature GPScompass or radio-controlled adjustment known as Multi-Band


The Multi-Band 6 is a radio control technology first introduced on the GW9200 Riseman in 2008[19] and is a successor to the Multi-Band 5 (which supported synchronisation with 5 atomic time transmitters around the world) and Wave Ceptor (which supported synchronisation with atomic time transmitters present in the United States and Japan only) technologies. G-Shock watches with Multi-Band 6 technology can synchronise with one of the six atomic time transmitters in the world in order to keep accurate time. The following is a list of the six atomic time transmitters:Japan

Watches can tune in to two locations:

The 40 kHz signal from JJY at Mount Otakadoya, near Fukushima (Ohtakadoyayama).

The 60 kHz signal from the Haganeyama Transmitter at Mount Hagane (Haganeyama).China

Watches tune to the 68.5 kHz signal from BPC at Shangqiu. This is the newest additional signal; older multi-band 5 watches will not be able to connect to this signal, and must be upgraded to a newer multi-band 6 watch in order to synchronise from there.United States

Watches tune to the 60 kHz signal from WWVB at Fort Collins.United Kingdom

Watches tune to the 60 kHz MSF at Anthorn.Germany

Watches tune to the 77.5 kHz low frequency time signal radio station DCF77 at Mainflingen.

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Guinness World Record title

On December 12, 2017, the G-Shock earned the Guinness World Record for the heaviest vehicle to drive over a watch. The officials from Guinness World Record drove a 24.97-tonne truck over the Casio G-Shock DW5600E-1. The G-Shock is the first watch by any company being able to withstand the challenge. Online Watch Store

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