| Dimensions | |
| Case Width | 41.25 mm (bezel diameter) |
| Case Thickness | 15.54 mm |
| Case Length | 49.50 mm end to end |
| Lug Width | 20.00 mm |
| Weight | 98 grams ( without strap ) |
| 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 - verified according to ISO 6425) |
| Case Finish | Bead blasted 316L stainless steel |
| Other | • Country of Origin: Made in Japan
• Double gasket screw-down crown • 120 click unidirectional bezel • Timed in 3 positions |
The TR-50717 ("Paradive, Class B") is Tornek-Rayville’s evolution of the military watch specification MIL-W-50717. After a survey of end users, we identified issues and weak points with the first generation contract watches and re-engineered the design to enhance and extend performance in challenging environments. The monocoque case of the first Class As and Bs minimized the number of water ingress points, but in practice the design was challenging to service and crystals developed stress fractures over time rendering them illegible. The two-piece stem the construction required was another vulnerability, usually revealed when the crown came off in one's hand while hack setting the time.
The Tornek-Rayville Paradive utilizes a proven 3 piece construction. The screw back case enables the watch to use a solid one-piece stem, carries forward the ergonomic curved case back, and improves ease of maintenance. The crystal is press fit into the front of the case and made of a tougher synthetic sapphire material that will not develop the "crazing" the first watches did. A unidirectional 120-click bezel, a safety feature for underwater timing, replaces the bi-directional friction bezel. The bezel is also available with either aluminum or acrylic timing dials.
Other notable changes and improvements include the replacement of fixed bars with reinforced heavy duty 2.50 mm spring bars that meet the ISO standards for dive watches. Each unit is also supplied with a thinner set of 1.80 mm spring bars for standard straps. In place of the specified Pm 147, this watch leverages a proprietary non-radioactive luminous material. The Japanese made NE15C movement delivers a longer power reserve and comparable accuracy to the preceding mil-spec.