Casio Casio G-Shock GMA-P2100SA-1A1DR: Compact Neon "CasiOak" with Bio-Resin

The GMA-P2100SA-1A1DR is a compact, sporty version of the popular octagonal "CasiOak" design, primarily marketed towards women or those with slimmer wrists. It features an all-black streamlined aesthetic with striking neon yellow and red accent colors inspired by athletic gear, which pop against the dark dial. A key feature of this model is the use of bio-based resin for the bezel and band, a material derived from renewable organic resources to help reduce environmental impact. It maintains core G-Shock toughness with Shock Resistance and 200M water resistance in a thin (11.2 mm) and lightweight (40 g) analog-digital case.

• Compact "CasiOak" Size: Features a smaller case size ($\text{46} \times \text{40.2} \times \text{11.2 mm}$) and weight ($\text{40 g}$) for a more comfortable fit on slimmer wrists.
• Bio-Based Resin: Key components of the bezel and band are made from bio-based resin for an environmentally conscious design.
• Neon Accent Colors: The all-black design is accented with vivid neon yellow/red markings on the hands and hour markers for a sporty, contemporary look.
• Analog-Digital Display: Versatile readout with two analog hands and a digital sub-display for comprehensive time and function data.
• Core Durability: Built with signature G-Shock Shock Resistance and 200-meter water resistance (20 ATM).
• Double LED Super Illuminator: Features a bright LED for the face and a backlight for the digital display, ensuring clear visibility in the dark.