Seiko Cal. 4550 - 301

This Spring Drive model from 1980 features a 36mm Stainless Steel case. Powered by the 4550 caliber with 17j jewels beating at 21,600 bph, it delivers a 64 hours power reserve. [seikata-wm-942b81cbbc10]

Also known as: Helmet, Flighty

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

36mm

Case Thickness

8.4mm

Lug Width

22mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

Silver

Jewels

17j

Frequency

21,600 bph

Power Reserve

64 hours

Year

1980

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