Seiko Cal. 3865 - 997

Seiko 3865-997

The Seiko 3865-997 represents an important milestone in Seiko's 1975 lineup. Powered by the 3865 caliber with 26j jewels beating at 21,600 bph, it delivers a 37 hours power reserve. [seikata-wm-e140ea5cd926]

Also known as: Monster, Helmet

Specifications

Movement
Kinetic
Case Material
Hardlex-Coated Steel
Case Width
46mm
Case Thickness
14.1mm
Lug Width
19mm
Crystal
Sapphire
Bezel
Inner Rotating
Water Resistance
190m
Dial Color
Silver
Jewels
26j
Frequency
21,600 bph
Power Reserve
37 hours
Year
1975

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seikata-wm-e140ea5cd926