Seiko Cal. 0737 - 561

The Seiko 0737-561 represents an important milestone in Seiko's 1975 lineup. Powered by the 0737 caliber with 18j jewels beating at 21,600 bph, it delivers a 44 hours power reserve. [seikata-wm-38ffb77b9ce0]

Also known as: Sportsmatic, Bellmatic

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

11.4mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

60m

Dial Color

Silver

Jewels

18j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1975

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