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Otsuka Lotec 5号改
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Case
- Diameter
- 40.5mm
- Thickness
- 7.6mm
- Lug width
- 22mm
- Material
- Stainless Steel
- Water resistance
- 30m
Crystal & dial
- Crystal
- Sapphire
Movement
- Caliber
- Miyota 90S5
- Type
- Automatic
- Power reserve
- 40h
Miyota
Miyota's open-heart variant of the 9015 platform, featuring a skeletonized dial-side plate that exposes the balance wheel through a cutout in the dial. Shares the same reliable 28,800 vph architecture and 42-hour power reserve as the standard 9015. Popular among microbrands offering open-heart designs at accessible price points without resorting to Chinese movements.
Design language
- Case shape
- round
- Dial style
- skeleton
- Bezel
- none
- Bracelet
- rubber_strap
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The Otsuka Lotec 5号改 is praised for its unique in-house satellite hour module featuring miniature ball bearings and its avant-garde, bezel-less design. Reviewers note its tall box sapphire crystal and 12.2mm thickness, including the crystal, allow it to fit under cuffs. The watch is powered by a Miyota 90S5 automatic movement and is exclusively available in Japan via lottery for JPY 748,000, approximately $4,500. One reviewer questions if its overt complexity detracts from the mystique found in other Lotec models. Overall, owners and reviewers appreciate the Otsuka Lotec 5号改 for its distinctive complication and design at its price point.
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