Seiko Cal. 5227 - 303

This Hand-Winding model from 1977 features a 37mm PVD Black case. It features a Navy dial protected by a Mineral crystal and offers 190m of water resistance. [seikata-wm-b5bfab6ed782]

Also known as: Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

37mm

Case Thickness

8.2mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

190m

Dial Color

Navy

Jewels

33j

Frequency

36,000 bph

Power Reserve

57 hours

Year

1977

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