Seiko Cal. 4447 - 555

The 4447-555 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4447 caliber with 17j jewels beating at 21,600 bph, it delivers a 68 hours power reserve. [seikata-wm-3816b5813079]

Also known as: UFO, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

35mm

Case Thickness

13.1mm

Lug Width

18mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

200m

Dial Color

Blue Sunburst

Jewels

17j

Frequency

21,600 bph

Power Reserve

68 hours

Year

1991

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