Seiko Cal. 6381 - 148

This Hand-Winding model from 1971 features a 40mm Titanium case. It features a Burgundy dial protected by a Mineral crystal and offers 60m of water resistance. [seikata-wm-11de2ac803f6]

Also known as: Sumo, World Timer

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

40mm

Case Thickness

9.4mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

Burgundy

Jewels

25j

Frequency

36,000 bph

Power Reserve

68 hours

Year

1971

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