Seiko Cal. 4435 - 527

The Seiko 4435-527 represents an important milestone in Seiko's 1970 lineup. Powered by the 4435 caliber with 22j jewels beating at 28,800 bph, it delivers a 41 hours power reserve. [seikata-wm-68c529b24cf2]

Also known as: Sumo, Bellmatic

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

15.6mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

Blue Sunburst

Jewels

22j

Frequency

28,800 bph

Power Reserve

41 hours

Year

1970

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