Seiko Cal. 6278 - 339

This Hand-Winding model from 1965 features a 36mm Hardlex-Coated Steel case. It features a Silver dial protected by a Sapphire crystal and offers 80m of water resistance. [seikata-wm-6971f0409f5e]

Also known as: Sumo, Tuna

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

13.0mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

Silver

Jewels

32j

Frequency

36,000 bph

Power Reserve

70 hours

Year

1965

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