Seiko Cal. 4445 - 550

The 4445-550 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 4445 caliber with 25j jewels beating at 36,000 bph, it delivers a 51 hours power reserve. [seikata-wm-026a4a79db6c]

Also known as: Golden Tuna, Arnie

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

10.3mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Silver

Jewels

25j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1994

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