Seiko Cal. 3870 - 284

This Hand-Winding model from 1970 features a 46mm Stainless Steel case. Powered by the 3870 caliber with 34j jewels beating at 21,600 bph, it delivers a 50 hours power reserve. [seikata-wm-7ed75d6318c0]

Also known as: Turtle

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

46mm

Case Thickness

8.7mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

110m

Dial Color

Black

Jewels

34j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1970

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