Seiko Cal. 4443 - 656

The Seiko 4443-656 represents an important milestone in Seiko's 1971 lineup. Powered by the 4443 caliber with 31j jewels beating at 36,000 bph, it delivers a 42 hours power reserve. [seikata-wm-f2259327311f]

Also known as: Monster

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

42mm

Case Thickness

8.1mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

Navy

Jewels

31j

Frequency

36,000 bph

Power Reserve

42 hours

Year

1971

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