Seiko Cal. 3887 - 912

This Hand-Winding model from 1980 features a 35mm Two-Tone case. Powered by the 3887 caliber with 17j jewels beating at 36,000 bph, it delivers a 45 hours power reserve. [seikata-wm-90fae90a5f21]

Also known as: Tuna

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

35mm

Case Thickness

13.4mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

White

Jewels

17j

Frequency

36,000 bph

Power Reserve

45 hours

Year

1980

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