Join the G-SHOCK 40th anniversary celebration with a very special, limited edition collaboration with the renowned Japanese bag brand PORTER. True to the toughness-driven identity of G-SHOCK, this special edition gives the full metal analog GM-B2100 a unique aged finish, adding a vintage touch to the octagonal form inherited from the design concept of the very first G-SHOCK, the DW-5000. Red, blue, and gold accents on the dial also pay homage to the G-SHOCK debut. To replicate the aging process, the bezel and band are ion plated in black, which is then partially removed to create a well-used texture. A luminescent beige finish on the watch hands adds the final touch, for a distinctive timeworn look.
Case size (L W H)
49.8 44.4 12.8 mmWeight
165 gCase and bezel material
Stainless steelBand
Stainless Steel BandSolid BandOne-touch 3-fold ClaspConstruction
Shock ResistantWater resistance
200-meter water resistancePower supply and battery life
Tough Solar (Solar powered)Glass
Mineral GlassBack plate
Screw Lock BackSurface treatment
Aged ion plated caseAged ion plated bandCompatible band size
150 to 205 mmWorld time
World time 38 time zones (38 cities coordinated universal time), city name display, daylight saving on/off, auto summer time (DST) switching, Home city/World time city swappingStopwatch
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, lap/split timeTimer
Countdown timer Measuring unit: 1 second Countdown range: 60 minutes Countdown start time setting range: 1 second to 60 minutes (1-second increments and 1-minute increments)Alarm/hourly time signal
5 daily alarmsHourly time signal