Seiko Cal. 5615 - 637

Seiko 5615-637

The 5615-637 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 5615 caliber with 35j jewels beating at 21,600 bph, it delivers a 52 hours power reserve. [seikata-wm-a6dcca143fad]

Also known as: Sportsmatic

Specifications

Movement
Kinetic
Case Material
Two-Tone
Case Width
35mm
Case Thickness
14.6mm
Lug Width
21mm
Crystal
Mineral
Bezel
Fixed
Water Resistance
50m
Dial Color
Silver
Jewels
35j
Frequency
21,600 bph
Power Reserve
52 hours
Year
1980

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