Seiko Cal. 3870 - 331

This Hand-Winding model from 1969 features a 42mm PVD Black case. Powered by the 3870 caliber with 35j jewels beating at 28,800 bph, it delivers a 57 hours power reserve. [seikata-wm-7da67dd6f4d1]

Also known as: Panda

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

42mm

Case Thickness

14.6mm

Lug Width

22mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

170m

Dial Color

Navy

Jewels

35j

Frequency

28,800 bph

Power Reserve

57 hours

Year

1969

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