Seiko Cal. 5273 - 285

The Seiko 5273-285 represents an important milestone in Seiko's 1971 lineup. Powered by the 5273 caliber with 33j jewels beating at 28,800 bph, it delivers a 54 hours power reserve. [seikata-wm-ce3f6a119b44]

Also known as: Sumo, Rally

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

12.7mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

200m

Dial Color

Silver

Jewels

33j

Frequency

28,800 bph

Power Reserve

54 hours

Year

1971

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