| Dimensions | |
| Case Width | 40.00 mm (not including crown) |
| Case Thickness | 14.70 mm |
| Case Length | 48.50 mm end to end |
| Lug Width | 20.00 mm |
| Weight | 84 grams |
| Crystal | Double domed sapphire crystal, with anti-reflective coating on interior surface only |
| Luminous | Arclite Super LumiNova (green emission) |
| Movement | Made in Japan SII NE15 (Rotor features Côtes de Genève), quickset date, hack setting, automatic with manual winding capability. Movement origin: Made in Japan |
| Water Resistance | 20 ATMs (200 meters) |
| Case Finish | Bead-blasted 316L stainless steel |
| Other | • Country of Origin: Made in Japan • Drilled through lugs • Double gasket screw-down crown • Timed in 3 positions |
The new TR-660 is a Type B self-winding wrist watch (submersible). Replacing the TR-900 MIL-W-22176A (SHIPS). The TR-660 features improvements including the use of a proprietary non-radioactive Super LumiNova luminous paint for longer service life and broader operational environments than legacy luminous materials. The Japanese made NE15C movement delivers a longer power reserve and superior accuracy to the preceding mil-spec. Water resistance has been improved to 660 feet and the construction enables longer service intervals. Lastly the TR-660 has optional aluminum or acrylic timing dials and reinforced spring bars to meet the ISO standards for dive watches.