Seiko Cal. 5615 - 428

Seiko 5615-428

The 5615-428 is a sought-after Automatic piece from Seiko's golden era. Powered by the 5615 caliber with 35j jewels beating at 21,600 bph, it delivers a 39 hours power reserve. [seikata-wm-b39399506c5c]

Also known as: Sumo

Specifications

Movement
Automatic
Case Material
Titanium
Case Width
44mm
Case Thickness
10.8mm
Lug Width
21mm
Crystal
Hardlex
Bezel
Rotating
Water Resistance
160m
Dial Color
Black
Jewels
35j
Frequency
21,600 bph
Power Reserve
39 hours
Year
1968

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