Seiko Cal. 3865 - 652

This Spring Drive model from 1986 features a 40mm Gold-Plated case. Powered by the 3865 caliber with 21j jewels beating at 28,800 bph, it delivers a 57 hours power reserve. [seikata-wm-0a597f71f190]

Also known as: Bullhead, Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

9.5mm

Lug Width

22mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

170m

Dial Color

Silver

Jewels

21j

Frequency

28,800 bph

Power Reserve

57 hours

Year

1986

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