Seiko Cal. 3897 - 311

The Seiko 3897-311 represents an important milestone in Seiko's 1984 lineup. With its 22mm lug width and 8.3mm profile, it sits comfortably on most wrists. [seikata-wm-4b0d1445d12b]

Also known as: Helmet, UFO

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

36mm

Case Thickness

8.3mm

Lug Width

22mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Black

Jewels

33j

Frequency

36,000 bph

Power Reserve

41 hours

Year

1984

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