Enthusiasts praise its solar power and Bluetooth pairing, and the unique dial finish: "Featuring a metal‑clad case, Bluetooth and Tough Solar ... the shimmering effect on the dial ... looks stunning in person." Another noted: "I recently got the GBM‑2100 1A2DR ... the premium brushed finish ... is worth every penny." https://saicreationswatches.com/products/g1582-casio-g-shock-gbm-2100a-1a2dr-analog-digital-watch-men