Stocker & Yale fitted the Sandy 490 with a Swiss ETA 2801 manual wind movement - no fancy blued screws or Geneva striping in this US military model. A hack seconds function enables precise time setting. The 34mm matted black case is made from fiberglass composite. The tritium vials are placed at a 5 minute interval in the outer ring of the dial. The tritium vials are also placed in the hour and minute hands. To eliminate error when reading the time in the dark, the tritium vial at 12 o’clock emits an orange light, while the rest are light green. Bright white Arabic numerals at every hour position identifying both the AM as well as the PM hour and clear, long stripes to indicate the minutes that don’t have a tritium valve. The dial shows “H3”, the chemical symbol for tritium, and a radioactive symbol. Because the tritium is contained in the vials any geigerteller won’t measure an elevated radioactive level outside the crystal. In great cosmetic and running condition, comes as watch only on nato strap. Asking $349, which includes free shipping. [timestamp](https://imgur.com/gallery/PDerMVJ)