Seiko Cal. 4447 - 545

The 4447-545 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4447 caliber with 23j jewels beating at 36,000 bph, it delivers a 56 hours power reserve. [seikata-wm-8732eb7271bd]

Also known as: Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

39mm

Case Thickness

8.9mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

160m

Dial Color

Burgundy

Jewels

23j

Frequency

36,000 bph

Power Reserve

56 hours

Year

1966

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