Seiko Cal. 3857 - 853

The Seiko 3857-853 represents an important milestone in Seiko's 1968 lineup. The Coin-Edge bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-ab5a6ad95dd9]

Also known as: Helmet, World Timer

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

10.9mm

Lug Width

18mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

White

Jewels

22j

Frequency

21,600 bph

Power Reserve

49 hours

Year

1968

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