Seiko Cal. 5648 - 402

The Seiko 5648-402 represents an important milestone in Seiko's 1985 lineup. The Coin-Edge bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-34bdb14ce1f2]

Also known as: Tuna, Silverwave

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

11.6mm

Lug Width

18mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

60m

Dial Color

Blue Sunburst

Jewels

28j

Frequency

36,000 bph

Power Reserve

57 hours

Year

1985

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