Casio G-Shock MRG Frogman MRGBF1000R-1A Blue Titanium Dive Watch – NAGI

Casio G-Shock

Casio G-Shock MRG Frogman MRGBF1000R-1A Blue Titanium Dive Watch

Casio G-Shock MRG Frogman MRGBF1000R-1A Blue Titanium Dive Watch

$5,000.00 USD


A premium, full-metal G-SHOCK MR-G timepiece for the sea — the titanium armor-clad, airtight MRG-BF1000 with ISO 200-meter water resistance joins the FROGMAN family of full-fledged diver’s watches.

This MR-G diver’s watch takes the unique asymmetrical design, screw-lock case back and distinctive diving frog character — which were so popular when FROGMAN came out back in 1993 — to a whole new level.

Originally produced in resin, the complex design has now been remade in titanium, with each component crafted separately and polished meticulously for an entirely new feel of high-end quality.

The watch is built with an intricate combination of over 70 exterior components, including an O-ring waterproof seal to deliver outstanding FROGMAN water resistance and special buffers to strengthen the shock-resistant structure — all while maintaining the beauty of form the MR-G line is known for. For enhanced strength, we’ve developed a protective structure with fluoro rubber buffers installed between the multiple bezel parts.

This structure features face-guarding functionality that helps to absorb shocks from the front and the sides, as well as protecting the crystal. The dedicated MR-G module features a gold-plated retainer plate. The screw-lock case back is fit with sapphire crystal finished in vibrant blue vapor deposition and engraved with the iconic FROGMAN diving frog character.

Dura Soft, a durable and comfortable fluoro rubber, is used for the band, and Ti64 titanium alloy for the buckle and band loop.

Simply remove the side pins while pressing the buttons on the lugs’ undersides to quickly and easily swap out the band. More than just handsome, this timepiece provides superior functionality, as well. Equipped with Bluetooth®, the hour and minute hands overlap and work in unison to form a single hand when in diving mode, making the time spent underwater (minutes) easy and intuitive to see and delivering high visibility.

Download the dedicated app to pair with your smartphone and easily display tide data for more than 3,000 locations around the world. Check dive logs on your smartphone and get more details on data tracked by your watch.


Dura Soft (fluoro rubber) band for a comfortable fit on the wrist

Flexible and durable fluoro rubber is used for the band, Ti64 titanium alloy for the buckle and band loop. Simply remove the side pins while pressing the buttons on the lugs’ undersides to quickly and easily swap out the band. Handy for performing occasional maintenance such as cleaning.


ISO 200-metre water resistance to support diving activities

The strong, lightweight, rust-resistant titanium case incorporates a crown and case back that both feature a screw-lock construction. These and other features throughout the design keep the watch air-tight to ensure ISO 200-metre diving water resistance.


Dive mode and tide graph mode: With full-analogue display

In dive mode, dive times and surface interval times are indicated by forward and reverse rotation of the hands. In tide graph mode, the watch displays tide graphs for a selected diving spot along with local time. Functions useful for diving are offered with full-analogue display.


Solar-powered timekeeping with Bluetooth® and radio control for enhanced accuracy and reliability


Super Illuminator (high-brightness LED light) for maintaining watch readability in the dark


Scratch-resistant, highly transparent sapphire crystal with an anti-reflective coating

Back engraving

LED light


  • Case size (L× W× H)

    56 × 49.7 × 18.6 mm
  • Weight

    132 g
  • Case and bezel material

    Case / bezel material: Titanium
  • Band

    Dura Soft Fluoro Rubber band
  • Construction

    Shock Resistant
    Magnetic Resistant
  • Water resistance

    ISO 200 meters Water Resistance
  • Time adjustment

    Radio-controlled Watch; Multi band 6
  • Power supply and battery life

    Tough Solar (Solar powered)

  • Smartphone Link feature

    Mobile link (Automatic connection, wireless linking using Bluetooth®)
  • Apps

  • App connectivity feature

    Auto time adjustment
    Easy watch setting
    Approximately 300 world time cities
    Diving log
    Tide graph setting (approximately 3,300 global points)
    Watch status display
    Self check
    Phone finder
    Premium Production Line certificate
  • Glass

    Sapphire crystal with glare-resistant coating
    Spherical Glass
  • Crown

    Screw Lock Crown
  • Back plate

    Screw Lock Back
  • Surface treatment

    Deep Layer Hardening + DLC Coating
  • Compatible band size

    150 to 220 mm
  • Other

  • Diving feature

    Diving mode Dive time: 1 second increments, up to 1:59'59 Surface time measurement: up to 24 hours Log data: up to 30 records
  • World time

    Dual time 27 time zones, Home time swapping, auto summer time (DST) switching
  • Tide graph

    Tide graph (tide level for specific date and time)
  • Stopwatch

    1-second stopwatch Measuring capacity: 23:59'59
  • Timer

    Countdown timer Measuring unit: 1 second Countdown range: 24 hours Countdown start time setting range: 1 minute to 24 hours (1-second increments)
  • Alarm/hourly time signal

    Daily alarm
  • Light

    LED light (Super Illuminator) Afterglow
  • Light color

  • Calendar

    Full auto-calendar (to year 2099)
  • Hand home position correction feature

    The auto hand home position correction
  • Energy saving feature

    Power Saving (hands stop to save power when the watch is left in the dark)
  • Run time

    Approx. battery operating time: 5 months on rechargeable battery (operation period with normal use without exposure to light after charge) 29 months on rechargeable battery (operation period when stored in total darkness with the power save function on after full charge)
  • Accuracy

    Accuracy: ±15 seconds per month (with no signal calibration and mobile link function)
  • Other features

    Hand shift feature (Hands move out of the way to provide an unobstructed view of indial)
    Regular timekeeping: Analog: 3 hands (hour, minute (hand moves every 5 seconds), second), 3 dials (dual time hour and minute, dual time 24 hour, day)
    Date display
    Day indicator
  • Time adjustment details

    Time Calibration Signals Station name: DCF77 (Mainflingen, Germany) Frequency: 77.5 kHz Station name: MSF (Anthorn, England) Frequency: 60.0 kHz Station name: WWVB (Fort Collins, United States) Frequency: 60.0 kHz Station name: JJY (Fukushima, Fukuoka/Saga, Japan) Frequency: 40.0 kHz (Fukushima) / 60.0 kHz (Fukuoka/Saga) Station name: BPC (Shangqiu City, Henan Province, China) Frequency: 68.5 kHz
    Time calibration signal reception Auto receive up to six* times a day (remaining auto receives canceled as soon as one is successful) *5 times a day for the Chinese calibration signal Manual receive The latest signal reception results