Seiko Cal. 4550 - 301

Seiko 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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