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Technical Data:
Maker: Otsuka Lotec
Model: No.5 Kai
Reference: N/A
Year: 2026
Condition: 10/10
Material: Stainless Steel
Dimensions: 40.5mm
Crystal: Sapphire Crystal
Dial: Openworked
Bezel: Stainless Steel
Caliber: Miyota 90S5 and In-house satellite 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:
The No.5 Kai perfectly embodies this vision with its industrial yet elegant design language. The watch case, crafted from durable materials, radiates strength while maintaining a warm simplicity that reflects Katayama’s reverence for tools designed with purpose. At its core lies the satellite hour mechanism, a groundbreaking complication where rotating numeral disks orbit fixed markers to display the time. This innovative design reimagines our perception of time, blending dynamic motion with static precision in perfect harmony. With an in-house satellite hour module paired with a Miyota 90S5 movement, the No.5 Kai stands as a testament to Otsuka Lotec’s commitment to redefining the boundaries of horological design.
For collectors, the Otsuka Lotec No.5 Kai is a symbol of Japan's expanding influence in the world of independent watchmaking. Each timepiece tells a deeply personal story of passion and dedication, reflecting Katayama’s unique ability to transform everyday inspirations into timeless creations.
