Seiko Cal. 3878 - 786

This Hand-Winding model from 1983 features a 43mm Two-Tone case. Powered by the 3878 caliber with 24j jewels beating at 28,800 bph, it delivers a 64 hours power reserve. [seikata-wm-f74cb0a1ff2f]

Also known as: Monster

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

43mm

Case Thickness

9.3mm

Lug Width

22mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

Green

Jewels

24j

Frequency

28,800 bph

Power Reserve

64 hours

Year

1983

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