Seiko Cal. 3897 - 550

Seiko 3897-550

This Automatic model from 1971 features a 39mm Titanium case. Powered by the 3897 caliber with 28j jewels beating at 21,600 bph, it delivers a 42 hours power reserve. [seikata-wm-4d06bacec6e5]

Specifications

Movement
Automatic
Case Material
Titanium
Case Width
39mm
Case Thickness
12.4mm
Lug Width
20mm
Crystal
Mineral
Bezel
Fixed
Water Resistance
140m
Dial Color
Burgundy
Jewels
28j
Frequency
21,600 bph
Power Reserve
42 hours
Year
1971

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