Seiko Cal. 4486 - 231

The Seiko 4486-231 represents an important milestone in Seiko's 1973 lineup. Powered by the 4486 caliber with 22j jewels beating at 28,800 bph, it delivers a 53 hours power reserve. [seikata-wm-a0022c77ff42]

Also known as: Bullhead, Helmet

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

9.6mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

200m

Dial Color

Burgundy

Jewels

22j

Frequency

28,800 bph

Power Reserve

53 hours

Year

1973

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