Seiko Cal. 5648 - 327

Released in 1971, the Cal. 5648 with design code 327 was part of Seiko's domestic market collection. It features a Blue Sunburst dial protected by a Mineral crystal and offers 60m of water resistance. [seikata-wm-ac79ae2c40d7]

Also known as: Helmet, Silverwave

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

13.2mm

Lug Width

20mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

60m

Dial Color

Blue Sunburst

Jewels

33j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1971

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