Image 1 of 13
Image 2 of 13
Image 3 of 13
Image 4 of 13
Image 5 of 13
Image 6 of 13
Image 7 of 13
Image 8 of 13
Image 9 of 13
Image 10 of 13
Image 11 of 13
Image 12 of 13
Image 13 of 13
Technical Data:
Maker: Otsuka Lotec
Model: No. 7.5
Reference: N/A
Year: 2026
Condition: 10/10
Material: Stainless Steel
Dimensions: 40mm
Crystal: Sapphire Crystal
Dial: Stainless Steel
Bezel: Stainless Steel
Caliber: Miyota 82S5 and In-house jumping hour module
Bracelet/Strap: Original Black calfskin strap with stainless steel buckle.
Box/Papers: Full set with box and papers
Condition:
The watch is in 10/10 in brand new condition where it maintains its original shape and design. The case is in unworn condition where the original plastic seal is still attached (Removed for photography purposes only). There appears to be no handling marks on the watch and the original strap is in brand new unworn condition with no bending or stretching.
Our Thoughts:
Measuring 40 mm in diameter, the No.7.5’s case is a work of art. With an interplay of straight graining and sandblasted finishes, its carefully crafted lines and curves create different visual effects depending on how the light hits it. The case is made from durable SUS316L stainless steel, and the use of sapphire crystal which is both for the main glass and the custom fisheye lens, ensures exceptional clarity and scratch resistance. These modern upgrades, introduced in the 2023 version, enhance both durability and aesthetics, making the No.7.5 a robust yet elegant timepiece.
For collectors, the Otsuka Lotec No.7.5 is a celebration of individuality and innovation. Its bold jumping hour complication, combined with its turret-style design, offers a fresh and unconventional take on timekeeping. With rare production and Katayama’s meticulous attention to detail, the No.7.5 is a true testament to the artistry of Japanese independent watchmaking.
