Seiko Cal. 3857 - 238

The Seiko 3857-238 represents an important milestone in Seiko's 1984 lineup. Powered by the 3857 caliber with 27j jewels beating at 21,600 bph, it delivers a 49 hours power reserve. [seikata-wm-4c6cf059006e]

Also known as: Helmet, Bellmatic

Specifications

Movement

Solar

Case Material

Titanium

Case Width

44mm

Case Thickness

9.1mm

Lug Width

22mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

30m

Dial Color

Navy

Jewels

27j

Frequency

21,600 bph

Power Reserve

49 hours

Year

1984

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