Casio G-SHOCK Small Classic Watch GMA-P2100ST-4AER

Introducing the Casio G-SHOCK GMA-P2100ST-4AER, the most refined expression of the legendary GA-2100 in a monochromatic blush pink palette. The octagonal case, strap, and dial share the exact same soft, uniform pink tone, creating a total-color effect that is at once eye-catching and understated. The dial features a pearlescent satin finish in matching pink, with subtly applied indices barely visible under direct light. The slim, luminescent-tipped hands provide a clean and legible read against the soft background. At 6 o'clock, a compact digital display shows the time in digital format, the date, and the day of the week, seamlessly integrated into the overall design without disrupting the chromatic harmony. The octagonal bezel carries the inscriptions "G-SHOCK" at the top and "PROTECTION" at the bottom, both in subtle relief within the same pink finish. The smooth resin strap, free of aggressive texturing, delivers a soft and comfortable feel on the wrist.

Inside beats the Casio module 5730, an analog-digital caliber combining three hands for primary timekeeping with a multifunctional digital display. This module offers world time covering 31 time zones and 48 reference cities, a 1/100-second stopwatch with 24-hour capacity, a countdown timer, five daily alarms, an auto-calendar programmed through the year 2099, and LED illumination for both the dial and digital display. Water resistance reaches 200 meters, maintaining the most demanding G-SHOCK standard even in this smaller, feminine format.

G-SHOCK was born in 1983 from engineer Kikuo Ibe, who set out to create an indestructible watch after accidentally watching one fall and shatter. After 200 prototypes and two years of drop tests from 10 meters and underwater resistance trials, the first DW-5000C was born. Four decades later, the Small Classic family inherits all that engineering in a 40.2 mm case designed for slimmer wrists, without sacrificing any of the functions that have made G-SHOCK iconic. The Carbon Core Guard structure protects the internal module from impacts and vibrations, ensuring the same durability found in larger models.

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Technical Specifications

Reference: GMA-P2100ST-4AER
Module/Caliber: 5730
Type: Analog-Digital
Movement: Quartz
Water Resistance: 200 meters
Shock Resistance: Yes, Carbon Core Guard structure
Case Material: Resin
Case Color: Blush pink
Strap Material: Resin
Strap Color: Blush pink
Dial Color: Pearlescent blush pink
Crystal: Mineral
Illumination: LED (dial and display)
Dimensions: 40.2 x 46.0 mm
Thickness: 11.2 mm
Weight: 40.0 g
Functions: World time (31 zones, 48 cities), 1/100-sec stopwatch up to 24 h, countdown timer, 5 daily alarms, auto-calendar until 2099, DST switching, digital time/date/day display
Battery: CR1025
Designed for: Women

User manual

Download the manual in English (PDF)