Seiko Cal. 6378 - 275

This Hand-Winding model from 1980 features a 39mm Gold-Plated case. It features a Navy dial protected by a Mineral crystal and offers 180m of water resistance. [seikata-wm-6f190e923fe3]

Also known as: Tuna, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

39mm

Case Thickness

13.0mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

Navy

Jewels

30j

Frequency

36,000 bph

Power Reserve

37 hours

Year

1980

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