Seiko Cal. 4550 - 218

The Seiko 4550-218 represents an important milestone in Seiko's 1966 lineup. Powered by the 4550 caliber with 36j jewels beating at 28,800 bph, it delivers a 66 hours power reserve. [seikata-wm-51db1b708703]

Also known as: Helmet, Crown

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

37mm

Case Thickness

8.1mm

Lug Width

18mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

160m

Dial Color

Blue Sunburst

Jewels

36j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1966

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