Seiko Cal. 3871 - 316

The 3871-316 is a sought-after Spring Drive piece from Seiko's golden era. With its 21mm lug width and 8.5mm profile, it sits comfortably on most wrists. [seikata-wm-1c11b0870917]

Also known as: Bellmatic

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

37mm

Case Thickness

8.5mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

White

Jewels

23j

Frequency

28,800 bph

Power Reserve

38 hours

Year

1971

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