Seiko Cal. 5646 - 716

The Seiko 5646-716 represents an important milestone in Seiko's 1981 lineup. It features a Blue Sunburst dial protected by a Hardlex crystal and offers 80m of water resistance. [seikata-wm-424b3d78c049]

Also known as: Tuna, Rally

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

14.5mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

80m

Dial Color

Blue Sunburst

Jewels

24j

Frequency

36,000 bph

Power Reserve

39 hours

Year

1981

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