Seiko Cal. 4537 - 897

Seiko 4537-897

The Seiko 4537-897 represents an important milestone in Seiko's 1981 lineup. Powered by the 4537 caliber with 36j jewels beating at 21,600 bph, it delivers a 47 hours power reserve. [seikata-wm-c469fcaad47d]

Also known as: Tuna, Sportsmatic

Specifications

Movement
Quartz
Case Material
Two-Tone
Case Width
46mm
Case Thickness
15.0mm
Lug Width
20mm
Crystal
Mineral
Bezel
Bidirectional
Water Resistance
60m
Dial Color
Champagne
Jewels
36j
Frequency
21,600 bph
Power Reserve
47 hours
Year
1981

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