The model number G1582, corresponding to the GBM‑2100A‑1A2DR, represents Casio's modern G‑STEEL 2100 series featuring a slim octagonal form factor enhanced with metal-clad design, incorporating Tough Solar for solar-powered charging and Bluetooth® Smartphone Link for smart connectivity. https://saicreationswatches.com/products/g1582-casio-g-shock-gbm-2100a-1a2dr-analog-digital-watch-men