Seiko Cal. 6220 - 405

The Seiko 6220-405 represents an important milestone in Seiko's 1976 lineup. Powered by the 6220 caliber with 33j jewels beating at 28,800 bph, it delivers a 45 hours power reserve. [seikata-wm-c4416e42afcb]

Also known as: Sumo, UFO

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

11.7mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

100m

Dial Color

Champagne

Jewels

33j

Frequency

28,800 bph

Power Reserve

45 hours

Year

1976

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