Seiko Cal. 3850 - 256

The Seiko 3850-256 represents an important milestone in Seiko's 1966 lineup. Powered by the 3850 caliber with 30j jewels beating at 21,600 bph, it delivers a 47 hours power reserve. [seikata-wm-c3e3d29b6c62]

Also known as: Helmet, Crown

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

39mm

Case Thickness

11.6mm

Lug Width

18mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

Burgundy

Jewels

30j

Frequency

21,600 bph

Power Reserve

47 hours

Year

1966

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