OLLECH & WAJS OW P-104

The OLLECH & WAJS OW P-104 comes from a time when aviators, engineers and navigators relied on their watches to perform complex calculations on the ground and in the air. Not based on a single OW reference, it is inspired by a range of aviator slide rule watches produced by Ollech & Wajs in the 1960s and 70s. Designed with today's military and professional pilots in mind, the P-104 S features a circular slide rule that can be used to determine differential speed, distance, range and other data.

The dial of the P-104 is configured and designed to evoke cockpit control panels. Its oversized indices and chequered hands are coated with orange Super-LumiNova® to ensure maximum legibility.

Its robust ETA 2824-2 OW3 mechanical movement, adjusted in five positions, makes the P-104 a reliable navigation instrument for high-flying pilots. The movement's main plate is engraved with "Ollech & Wajs Zurich 1956" and fitted with our own milled rotor bearing the famous OW propeller monogram.

In keeping with Ollech & Wajs’ longstanding reputation for extreme water resistance, the P-104 has a depth rating of 300 m / 30 ATM — impressive for a dive watch, let alone a pilot’s watch. The watch is assembled and adjusted in Haute-Sorne in the Swiss Jura, in the historical workshop that has served OW for over 60 years.

The P-104 S is supplied with the OW S-type Mark II rice-grain steel bracelet. This bracelet is inspired by earlier Ollech & Wajs models from the 1960s. The links are individually milled from a solid block of 316L stainless steel before being carefully hand-brushed and screwed together. This process prevents the common stretching found in pressed steel bracelets and ensures both durability and wearing comfort. The bracelet's double-locking deployant clasp prevents accidental opening.

The P-104 is supplied with a high-quality, extremely durable and water-resistant RAF Regiment-style NATO strap. Alternatively, there is a 20 mm wide Italian black leather strap with natural linen, lined with a soft, light brown underside and embossed with the OW emblem. Both strap and bracelet are handmade in Switzerland and feature a brushed stainless steel pin buckle, signed "OWZ 1956".

Specifications 

Dimensions: 39 mm × 12.5 mm

Case: Brushed 316L stainless steel, screw-down case back, screw-in crown, rotating slide rule bezel, manufactured in Jura, Switzerland.

Crystal: Sapphire crystal with anti-reflective coating

Dial: Hands and indices in Super-LumiNova®

Water Resistance: 300 m / 30 ATM

Movement: Automatic ETA 2824-2 OW3P, 25 jewels, 28,800 vibrations per hour, power reserve of +/-38 hours, engraved main plate "Ollech & Wajs Zurich 1956" and OW-manufactured rotor

S-Bracelet: 20 mm 316L stainless steel beads-of-rice OW S-Type Mark II, with double-locking deployant clasp

RAF Regiment Strap: 20 mm, high-quality, durable nylon strap in RAF Regiment style, manufactured in the UK, handcrafted in Switzerland; with a brushed stainless steel pin buckle, signed "OWZ 1956"

Black Leather Strap: 20 mm wide Italian black leather and natural linen strap, with soft light brown lining and embossed OW logo, handcrafted in Switzerland; with a brushed stainless steel pin buckle, signed "OWZ 1956"

Origin: Swiss made