Seiko Cal. 6310 - 280

This Spring Drive model from 1969 features a 45mm Hardlex-Coated Steel case. It features a Navy dial protected by a Mineral crystal and offers 180m of water resistance. [seikata-wm-4f7d112b29b3]

Also known as: Baby Tuna, Flighty

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

8.6mm

Lug Width

18mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

Navy

Jewels

33j

Frequency

36,000 bph

Power Reserve

55 hours

Year

1969

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