Seiko Cal. 4471 - 472

The 4471-472 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4471 caliber with 34j jewels beating at 21,600 bph, it delivers a 37 hours power reserve. [seikata-wm-9f4eebbab36b]

Also known as: Sumo, UFO

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

46mm

Case Thickness

9.7mm

Lug Width

21mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

160m

Dial Color

Silver

Jewels

34j

Frequency

21,600 bph

Power Reserve

37 hours

Year

1973

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