Seiko Cal. 3897 - 447

Seiko 3897-447

The Seiko 3897-447 represents an important milestone in Seiko's 1973 lineup. Powered by the 3897 caliber with 19j jewels beating at 28,800 bph, it delivers a 51 hours power reserve. [seikata-wm-8267a7f3e340]

Also known as: Helmet, Sportsmatic

Specifications

Movement
Quartz
Case Material
Gold-Plated
Case Width
40mm
Case Thickness
13.7mm
Lug Width
19mm
Crystal
Sapphire
Bezel
Fixed
Water Resistance
90m
Dial Color
Navy
Jewels
19j
Frequency
28,800 bph
Power Reserve
51 hours
Year
1973

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seikata-wm-8267a7f3e340