Seiko Cal. 3891 - 652

Released in 1987, the Cal. 3891 with design code 652 was part of Seiko's domestic market collection. It features a Green dial protected by a Mineral crystal and offers 180m of water resistance. [seikata-wm-87af27c20abb]

Also known as: Bullhead

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

35mm

Case Thickness

8.2mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

Green

Jewels

27j

Frequency

36,000 bph

Power Reserve

60 hours

Year

1987

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