Seiko Cal. 4436 - 255

Released in 1981, the Cal. 4436 with design code 255 was part of Seiko's domestic market collection. Powered by the 4436 caliber with 27j jewels beating at 21,600 bph, it delivers a 57 hours power reserve. [seikata-wm-5730bb23cbe7]

Also known as: Bellmatic, World Timer

Specifications

Movement

Kinetic

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

10.8mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Green

Jewels

27j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1981

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