Seiko Cal. 4550 - 441

The 4550-441 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4550 caliber with 21j jewels beating at 36,000 bph, it delivers a 44 hours power reserve. [seikata-wm-bf67ad7120bd]

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

35mm

Case Thickness

12.2mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

200m

Dial Color

Silver

Jewels

21j

Frequency

36,000 bph

Power Reserve

44 hours

Year

1987

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