Seiko Cal. 5647 - 305

Released in 1981, the Cal. 5647 with design code 305 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-8d6fe46cbc3c]

Also known as: Sumo, Bellmatic

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

46mm

Case Thickness

9.9mm

Lug Width

18mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

60m

Dial Color

Blue Sunburst

Jewels

27j

Frequency

21,600 bph

Power Reserve

38 hours

Year

1981

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