Otsuka Lotec
Otsuka Lotec No.5
Otsuka Lotec
P05
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Details & Specifications
Description
OTSUKA LOTEC's No.5 KAI, designed by self-taught Japanese watchmaker Jiro Katayama, features a distinctive satellite (wandering) hour display — an exotic complication more commonly associated with high-end Swiss independents such as Urwerk.
Built on a Miyota 90S5 automatic movement with an in-house satellite hour module, three rotating satellites each carry four printed hour numerals that also serve as minute pointers against the chapter ring. The openworked dial exposes portions of the movement, while a small seconds disc sits at 5:30. The defining visual element is a dramatically domed, panoramic box sapphire crystal, which rises well above the bezel-free case edge — the case measures 7.6mm thick without the crystal, and 12.2mm in total height.
Specifications:
| Movement | |
| Type | Automatic |
| Functions | Satellite (Wandering) Hours, Small Seconds |
| Calibre | Miyota 90S5 with satellite hour module developed by Otsuka Lotec |
| Frequency | 4 Hz / 28,800 vph |
| Power Reserve | Approx. 40 hours |
| Case | |
| Case Material | Stainless Steel |
| Size | 40.5 mm |
| Case Thickness | 12.2 mm (including crystal) |
| Water Resistance | 30 m |
| Bezel | Bezel-free design, Stainless Steel |
| Crystal | Panoramic Box Sapphire Crystal |
| Dial | Openworked |
| Dial Indicators | Satellite Hours, Small Seconds at 5:30 |
| Strap | |
| Strap Material | Black Double-Padded Leather |
| Clasp | Pin Buckle |