Tel: 03-6263-9671 11:30 - 19:00 (Closed on Sundays, Mondays, New Year holidays)
At the time of your visit
Otsuka LŌTEC
STATUS - On sale ●









Otsuka LŌTEC
STATUS - On sale ●
| References Model number |
NO.5 KAI Unused (One Owner) |
|---|---|
| Material/Size Material/diameter/thickness |
Stainless steel/40.5mm/12.2mm |
| strap strap |
22×20mm |
| Dial Dial |
Skeletonize |
| Movement movement |
MIYOTA90S5 + in-house module Automatic winding Power reserve: approx. 40 hours |
| Functions Features |
Jumping hour, minute and second discs |
| Water resistant waterproof |
Daily life waterproof |
| Weight weight |
67g |
| Accessories Accessories |
Box, international warranty card (December 2025), instruction manual, specifications |
| Repair record Repair record |
None |
| Witschi CHRONOCUBE Accuracy measurement |
Dial top★ Dial ㊨★★ Dial ㊦★ Dial ㊧★★ Dragon head ㊦★ 5-level judgment standard value table |
| Remarks Remarks |
ŌTSUKA LŌTEC NO.5 KAI ŌTSUKA LŌTEC is an independent Japanese mechanical watch brand founded in 2012 in Otsuka, Tokyo by product designer Jiro Katayama, who has also worked on designs for Toyota cars. The brand is known for its rugged, industrial design and unique mechanisms such as jumping hours. Despite being produced in small quantities, this brand is highly regarded internationally, with models housed in the National Museum of Nature and Science, and in 2024 it was awarded the "Contemporary Master Craftsman" award and won the Grand Prix at the GPHG (Grand Prix de la Horlogerie de Genève).This is a brand by an independent Japanese watchmaker that is currently attracting attention. Katayama is responsible for all aspects of production, from design, engineering, to assembly. The "No. 5 Kai" we are introducing today is the successor to the "No. 5" released at the company's founding in 2012, and follows the design of the No. 5. However, instead of the regulator for the disc display of the No. 5, it has a unique satellite hour mechanism in which two reduction gears that move the hour display disc are arranged vertically and are placed directly against a ball bearing roller at the 8 o'clock position to switch the discs, adding visual enjoyment to the movement and giving depth to the mechanism with a bold and unique concept, and feeling like an evolution from the No. 5. The design essence, reminiscent of Audemars Piguet's Star Wheel and Harry Winston's Opus 5, gives it a sense of Swiss watchmaking that has not been seen in purely Japanese-made watches until now. List price: ¥748,000 (tax included) *As of December 2025 |
| Price Price |
Please contact us Upon request |
Payment Method
Cash, trade-in, transfer, credit card, UnionPay card, shopping credit
Trade-in serviceIf you sell your watch that you no longer need, we will use the money as part of your payment.
Available credit cards
VISA / MASTER / AMEX / Diners / JCB / UnionPay Card
*Even if you are far away, you can use the wireless payment machine.
Available shopping credits
Yamato Credit Finance
*Please contact us if you wish to apply for more than 1,000 million yen.Transfer destination information
Bank name Sumitomo Mitsui Banking Corporation
Branch name Ginza Branch (026)
Account number ordinary 8625236
Account name Premium Watch Co., Ltd.