Seiko Cal. 3816 - 986

The Seiko 3816-986 represents an important milestone in Seiko's 1968 lineup. The Inner Rotating bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-4208fc590ae2]

Also known as: Helmet, Bellmatic

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

41mm

Case Thickness

13.8mm

Lug Width

22mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Burgundy

Jewels

28j

Frequency

36,000 bph

Power Reserve

54 hours

Year

1968

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