Seiko Cal. 4550 - 370

The Seiko 4550-370 represents an important milestone in Seiko's 1975 lineup. Powered by the 4550 caliber with 19j jewels beating at 36,000 bph, it delivers a 56 hours power reserve. [seikata-wm-d45b1e1eba34]

Also known as: Samurai, Arnie

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

44mm

Case Thickness

9.2mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Silver

Jewels

19j

Frequency

36,000 bph

Power Reserve

56 hours

Year

1975

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