GrailAtlasAn independent reference for mechanical watches
OTSUKA LOTEC No. 5 Kai (GPHG 2025)

OTSUKA LOTEC No. 5 Kai

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~$5,306 · 1 CHF = 1.234 USD (2026-07-22)

Year
2025
Reference
P5K
Case
ø 40.5 mm · Acier
Material
Steel
Dial
Silver
Movement
Mécanique à remontage automatique Réserve de marche: 40 h, 28800 alt/h
Water resistance
30 m
Price tier
$5K–$10K

OTSUKA LOTEC is a Japanese watch brand founded by independent watchmaker Jiro Katayama. The "No.5 KAI" model is equipped with a Japanese MIYOTA movement with an additional time module

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OTSUKA LOTEC No. 5 Kai (GPHG 2025) — Grail Atlas