Marteau : The Heat Wave
Wednesday, 10 - Wednesday, 17 June 2026

Otsuka Lotec, Model No 7.5

Estimate CHF 2’000 - CHF 4’000

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For this particular lot, the Maker’s Fee promised by Marteau & Co. may, at the brand’s discretion, be allocated by Marteau to one or more non-profit organizations supporting watchmaking and craftsmanship.

Lot Details

What You Should Know: Otsuka Lotec watches look unlike anything from Switzerland — more inspired by cameras, machinery, and industrial tools than traditional luxury design. Every piece is designed by independent Japanese watchmaker Jiro Katayama, giving the brand a cult following among serious collectors. Production is extremely limited, which makes each release feel more like an art drop than a normal watch launch. Buying one outside Japan is notoriously difficult — many releases require Japanese residency, local payment methods, and winning a lottery just for the chance to purchase. This example of the No 7.5 model is sold brand new, and has never been worn.


Otsuka Lotec, Model No 7.5 Image 1++
Otsuka Lotec, Model No 7.5 Image 1++
Otsuka Lotec, Model No 7.5 Image 1++
Otsuka Lotec, Model No 7.5 Image 1++
Otsuka Lotec, Model No 7.5 Image 1++
Otsuka Lotec, Model No 7.5 Image 1++

Specifications

  • Manufacturer: Otsuka Lotec
  • Model Name: No 7.5
  • Functions: Hours, minutes, small seconds
  • Year: 2026
  • Case/Movement: No. P75-18334
  • Material: Stainless Steel
  • Calibre: Automatic, Miyota cal. 82S5, 24 jewels
  • Bracelet/Strap: Original Leather strap
  • Clasp/Buckle: Stainless Steel pin buckle
  • Dimensions: 40mm Diameter
  • Signed: Case, dial, movement and buckle signed
  • Accessories: Accompanied by Otsuka Lotec warranty stamped Precision Watch Tokyo dated March 2026, instruction manual, cloth, fitted presentation box and outer packaging.

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