Seiko Cal. 4550 - 455

The Seiko 4550-455 represents an important milestone in Seiko's 1985 lineup. Powered by the 4550 caliber with 34j jewels beating at 36,000 bph, it delivers a 69 hours power reserve. [seikata-wm-b6a3d86987d5]

Also known as: Sumo, Golden Tuna

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

11.7mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

Green

Jewels

34j

Frequency

36,000 bph

Power Reserve

69 hours

Year

1985

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