Seiko Cal. 3854 - 487

Seiko 3854-487

This Spring Drive model from 1968 features a 34mm Hardlex-Coated Steel case. Powered by the 3854 caliber with 17j jewels beating at 21,600 bph, it delivers a 63 hours power reserve. [seikata-wm-0c3e221c60db]

Specifications

Movement
Spring Drive
Case Material
Hardlex-Coated Steel
Case Width
34mm
Case Thickness
15.8mm
Lug Width
21mm
Crystal
Hardlex
Bezel
Bidirectional
Water Resistance
30m
Dial Color
Navy
Jewels
17j
Frequency
21,600 bph
Power Reserve
63 hours
Year
1968

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