Seiko Cal. 6621 - 365

This Automatic model from 1983 features a 37mm Stainless Steel case. It features a Navy dial protected by a Hardlex crystal and offers 40m of water resistance. [seikata-wm-10ed75812a05]

Also known as: Tuna

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

9.0mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

40m

Dial Color

Navy

Jewels

24j

Frequency

36,000 bph

Power Reserve

44 hours

Year

1983

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