Casio GBM-2100A-4BDR

Smart and stylish, sleek and sophisticated — a GBM-2100 with bold metal bezel that delivers Smartphone Link and Tough Solar charging system, all in the same compact size.

Key resin components used in the case and band are made with environmentally responsible bio-based resin.

Choose your favorite color combination of vapor deposition finishes — the GBM-2100A-2B with blue dial and silvery indexes, the GBM-2100A-4B with burgundy dial and silvery indexes, or the GBM-2100A-8B with light yellow gold-colored dial and black accented indexes.

Tough construction and stylish design in a timepiece that takes you from casual settings to business meetings with ease.

Specifications

• Case/bezel material: Bio-based Resin / Stainless steel
• Bio-based resin band
• Tough Solar (Solar powered)
• Mobile link (Wireless linking using Bluetooth®)
• 200-meter water resistance
• Shock Resistant
• Double LED light
• LED light for the face (Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow)
• LED backlight for the digital display (Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds, afterglow)
• World time: 38 time zones (38 cities + coordinated universal time), city code display, city name display, daylight saving on/off, auto summer time (DST) switching, Home city/World time city swapping

• Mineral Glass
• Neobrite
• Mute Feature: Button operation tone on/off

• 5 daily alarms
• Hourly time signal
• 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, lap/split time

• 12/24-hour format
• Hand shift feature (Hands move out of the way to provide an unobstructed view of digital display contents.)
• Date/month display swapping
• Battery display/alert: Battery level indicator
• Run time: Approx. battery operating time: 7 months on rechargeable battery (operation period with normal use without exposure to light after charge) 18 months on rechargeable battery (operation period when stored in total darkness with the power save function on after full charge)
• Apps: CASIO WATCHES
• App connectivity feature:
  Auto time adjustment
  Easy watch setting
  Approximately 300 world time cities
  Time & place
  Reminder
  Phone finder
• Regular timekeeping:

Analog:2 hands (hour, minute (hand moves every 20 seconds)), 1 dial (battery level, mode)

Digital: Hour, minute, second, pm, month, date

• Full auto-calendar (to the year 2099)
• 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)

• Accuracy: ±15 seconds per month

Size of case / Total weight

• Size of case: 49.3 × 44.4 × 11.9 mm
• Total weight: 72 g