Seiko Cal. 3865 - 840

Seiko 3865-840

This Solar model from 1973 features a 36mm Two-Tone case. Powered by the 3865 caliber with 19j jewels beating at 21,600 bph, it delivers a 68 hours power reserve. [seikata-wm-d375ffe230d7]

Specifications

Movement
Solar
Case Material
Two-Tone
Case Width
36mm
Case Thickness
13.7mm
Lug Width
21mm
Crystal
Sapphire
Bezel
Rotating
Water Resistance
130m
Dial Color
Navy
Jewels
19j
Frequency
21,600 bph
Power Reserve
68 hours
Year
1973

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