





Otsuka Lotec No.5 Kai Skeleton Stainless Steel
Tax included price Shipping Feewill be calculated at checkout.
Important: Tax Information for Overseas Customers
- Shipping overseas: Prices are tax-free (Japanese consumption tax is not charged). Import duties and taxes in your country are the buyer's responsibility.
- Buying in store: From November 1, 2026, Japan's tax-free system has changed. You will first pay the full price including Japanese consumption tax (10%). When you leave Japan, your purchase will be checked at the airport. The tax will then be refunded to the bank account or credit card you registered. A service fee applies. Please bring your passport when you visit.
- Condition Rank
- N Brand new / unused (including display items and long-term storage items)
- Brand
- Otsuka Lotec
- Model Number
- No.5 Kai
- Gender
- Men's
- Material
- Stainless Steel
- Accessories
- Storage box, instruction manual, warranty card
- Warranty Card Date
- October 2026
- Case Size
- Approx. 40.5mm
- Country of Origin
- Japan
- Year of Production
- 2026
- Movement
- Automatic
- Display Type
- Analog display
- Case Shape
- Round Face
- Dial Color
- Skeleton
- Remarks
- The Otsuka Lotec "No.5" was the brand's first production model, released in 2012 by self-taught watchmaker Jiro Katayama. Instead of conventional hands, it shows the time with a regulator-style display using an hour disc at 12 o'clock and a minute disc at 6 o'clock, combined with a central small seconds and a date display. Two ball bearings visible from the front are part of the design, giving it the mechanical look of a measuring instrument. The movement is based on the Miyota automatic Cal.8215, modified by Mr. Katayama to suit the display mechanism. The model name comes from the order of the case designs. It was made until 2022 and became the design origin of the No.5 Kai introduced in 2025. Brand new and unused.
- Item Number
- W202610121
N: New and unused items (including display items and long-term storage items)
S: Used only a few times, in excellent condition with very little signs of wear (very slight scratches. Items refurbished to like new are also classified as this rank.)
A: It is in good condition overall with little signs of use (there are some minor scratches).
AB: Signs of use. Overall in relatively good condition (some scratches).
B: Signs of use. Condition that does not interfere with normal use (There are obvious scratches and stains, as with everyday use.)
BC: Shows signs of use. Some repairs or replacements are necessary, but most of the item is still usable (there are many scratches and stains, etc.).
C: Junk (not tested, not working properly)
Select an option






Tax included price Shipping Feewill be calculated at checkout.
Important: Tax Information for Overseas Customers
- Shipping overseas: Prices are tax-free (Japanese consumption tax is not charged). Import duties and taxes in your country are the buyer's responsibility.
- Buying in store: From November 1, 2026, Japan's tax-free system has changed. You will first pay the full price including Japanese consumption tax (10%). When you leave Japan, your purchase will be checked at the airport. The tax will then be refunded to the bank account or credit card you registered. A service fee applies. Please bring your passport when you visit.