Introducing a watch commemorating 50 years of Casio watches with a design based on the GMW-B5000, a model which reproduced the iconic form of the first-ever G-SHOCK, but with a full-metal exterior. Design features including blue and gold accent colours and fluted design pay homage to the original Casiotron and give the watch a fittingly special look evoking the sky and sea.

1. Full-metal design accented with blue and gold:

The dial’s perimeter is adorned with the iconic fluted pattern of the original Casiotron and given a beautiful gleam with gold vapour deposition. Combined with the blue IP finish applied to the bezel top, the design gives the watch a striking sense of presence. Gold IP is applied to the side buttons as well, for an extra-special touch.

2. Screw-lock case back engraved with 50th anniversary logo:

The case back features a robust, stainless-steel screw-lock construction that ensures a tight seal. A diamond-like carbon (DLC) coating is applied to the metal to provide improved abrasion resistance, and a 50th anniversary logo is engraved in the case back.

*The orientation of the case back may vary from watch to watch due to details of the manufacturing process.

3. Metal band with bicolor finish:

A gold-and-silver bicolor finish is given to the tri-fold clasp as a special design feature. The folded section, revealed when opening or closing the clasp, is engraved with a triangle pattern and “50th Anniversary” lettering.

4. Special eco-packaging: 

The watch comes in a special eco-package made with recycled materials, which also includes a cotton pouch for storing accessories.

• Case size (L× W× H): 49.3 × 43.2 × 13 mm
• Weight: 167 g
• Case and bezel material: Stainless steel
• Band: Stainless Steel Band, Solid Band, One-touch 3-fold Clasp
• Construction: Shock Resistant
• Water resistance: 200-meter water resistance
• Time adjustment: Radio-controlled Watch; Multi band 6, Bluetooth: Connects to a smartphone and automatically adjusts the time
  
• Power supply and battery life: Tough Solar (Solar powered)
• Smartphone Link feature: Mobile link (Wireless linking using Bluetooth®)
  
• Apps: CASIO WATCHES
  
• App connectivity feature: Auto time adjustment
  Easy watch setting
  Approximately 300 world time cities + user-added point
  Time & place
  Reminder
  Phone finder
• Glass: Mineral Glass
  
• Back plate: Screw Lock Back
  
• Surface treatment: Blue ion plated bezel
  
• Compatible band size: 150 to 205 mm
• World time: 5 World time , 39 time zones (39 cities +coordinated universal time), auto summer time (DST) switching, home city/world time city swapping
• Stopwatch: 1/100-second stopwatch
  Measuring capacity: 00'00''00~59'59''99 (for the first 60 minutes)
  1:00'00~23:59'59 (after 60 minutes)
  Measuring unit: 1/100 second (for the first 60 minutes)
  1 second (after 60 minutes)
  Measuring modes: Elapsed time, split time, 1st-2nd place times
• Timer: Countdown timer
  Measuring unit: 1 second
  Countdown range: 24 hours
  Countdown start time setting range: 1 second to 24 hours (1-second increments, 1-minute increments and 1-hour increments)
• Alarm/hourly time signal: 5 daily alarms (with 1 snooze alarm)
  Hourly time signal
• Light: LED backlight (Super illuminator)
  Full auto LED light, selectable illumination duration (2 seconds or 4 seconds), afterglow
• Light color: LED:White
  
• Calendar: Full auto-calendar (to year 2099)
  
• Mute feature: Button operation tone on/off
  
• Energy saving feature: Power Saving (display goes blank to save power when the watch is left in the dark)
  
• Battery display/alert: Low battery alert
• Run time: Approx. battery operating time:
  10 months on rechargeable battery (operation period with normal use without exposure to light after charge)
  22 months on rechargeable battery (operation period when stored in total darkness with the power save function on after full charge)
• Accuracy: ±15 seconds per month (with no signal calibration and mobile link function)
  
• 12/24-hour format
  
• Date/month display swapping
  
• Day display (days of the week selectable in six languages)
  
• Regular timekeeping:
  
• Hour, minute, second, pm, month, date, day
• 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