This new color model was designed under the theme of exploration of an unknown coastal region. This new lineup is based on the thin octagonal GA-2100. GA-2100HC uses transparent resin to cover the watch case and highly transparent resin for the band. This Series is design to go well with street fashions and other styles.

• Case / bezel material: Resin

• Resin Band

• Mineral Glass

• Neobrite

• Shock Resistant

• Carbon Core Guard structure

• 200-meter water resistance

• 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 31 time zones (48 cities + coordinated universal time), daylight saving on/off

• 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 second to 24 hours (1-second increments, 1-minute increments and 1-hour increments)

• 5 daily alarms

• Hourly time signal

• Hand shift feature

• Full auto-calendar (to year 2099)

• 12/24-hour format

• Button operation tone on/off

• Regular timekeeping Analog: 2 hands (hour, minute (hand moves every 20 seconds)), 1 dial (day) Digital: Hour, minute, second, pm, month, date

• Accuracy: ±15 seconds per month

• Approx. battery life: 3 years on SR726W × 2

• Size of case : 48.5×45.4×11.8mm

• Total weight : 51g