Founded in 2008 by Jiro Katayama, a Japanese automotive and industrial designer, Ōtsuka Lōtec was born out of a purely experimental passion for metalworking. After casually purchasing a small bench lathe in an online auction, Katayama began machining watch cases in his home garage in the Otsuka neighbourhood of Tokyo. Combining the district's name with "Lotec" which was a nod to his love for analogue, "low-tech" instruments, he officially began selling his creations to the public in 2012. Rather than adhering to traditional Swiss horological tropes, Katayama approaches watchmaking strictly through an industrial lens. His highly unconventional timepieces draw heavy inspiration from vintage film cameras, automotive dashboard gauges, electrical meters, and mid-century industrial machinery.
For its first decade, Ōtsuka Lōtec operated as an ultra-niche, artisanal project, with Katayama hand-producing a mere fraction of watches each year for local Japanese collectors. However, the brand's trajectory shifted dramatically in 2022 when legendary independent watchmaker Hajime discovered Katayama’s work. Recognising the brilliant, uncompromised vision of models like the camera-inspired No. 7.5 and the gauge-like No. 6, Asaoka brought Ōtsuka Lōtec under the umbrella of Precision Watch Tokyo. This pivotal partnership provided Katayama with the manufacturing resources and personnel to scale up production, while still allowing him to prototype new mechanisms in his personal workshop. Today, the brand has transformed into a global cult sensation that remains incredibly difficult to acquire, a status that was permanently cemented when the double-retrograde Model No. 6 won the prestigious Challenge Prize at the Grand Prix d'Horlogerie de Genève (GPHG).
