Casio G-Shock Full Metal Case Bluetooth¶ô¶÷ Multi-Band 6 Tough Solar Tunnel Design Watch GMWB5000CS-1D GMW-B5000CS-1D GMW-B5000CS-1

This is the GMW-B5000 Series, which includes the distinctive square design of the original DW-5000C G-Shock model from 1983 while adding a full metal finish. This model has a unique design that employs laser etching across the entire watch. 
The watch has been given a full metal case by using a shock-resistant fine resin cushioning material between the case and the sturdy stainless steel metal bezel. After black IP treatment has been applied across the entire case and band, a special laser etched finish is used to create a Grid Tunnel. The concept of the 5000 Series, which has evolved over the decades since 1983 without changing its look, aligns with the Grid Tunnel image of "the flow of time from past to present" to create the watch's overall design. 
Function-wise, this model comes with Bluetooth® communications and can link with a dedicated app to obtain precise time information. The watch is also packed with practical features including a time correction system that uses standard time and frequency signals (Multi-Band 6), a reliable source of power in the form of Tough Solar technology, high-luminance Full Auto LED backlighting, World Time and day of the week display in six languages. 
This is a G-Shock model with a unique design that only full-metal can realize.

Case / bezel material: Stainless steel
One-touch 3-fold Clasp
Solid Band
Stainless Steel Band
Shock Resistant
Mineral Glass
Black IP
Screw Lock Back
200-meter water resistance
Tough Solar (Solar powered)
LED backlight (Super illuminator)
Full auto LED light, selectable illumination duration (2 seconds or 4 seconds), afterglow
LED:White
Radio-controlled Watch; Multi band 6
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
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
Mobile link (Wireless linking using Bluetooth®)
5 World time
39 time zones (39 cities +coordinated universal time), daylight saving on/off, Home city/World time city swapping, auto summer time (DST) switching
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
Countdown timer
Measuring unit: 1 second
Countdown range: 24 hours
Countdown start time setting range: 1 minute to 24 hours (1-minute increments and 1-hour increments)
5 daily alarms (with 1 snooze alarm)
Hourly time signal
Low battery alert
Power Saving (display goes blank to save power when the watch is left in the dark)
Full auto-calendar (to year 2099)
12/24-hour format
Button operation tone on/off
Date/month display swapping
Day display (days of the week selectable in six languages)
Regular timekeeping:
Hour, minute, second, pm, month, date, day
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)
Size of case : 49.3 × 43.2 × 13 mm
Total weight : 167 g