Seiko Cal. 4420 - 137

Released in 1974, the Cal. 4420 with design code 137 was part of Seiko's domestic market collection. Powered by the 4420 caliber with 32j jewels beating at 36,000 bph, it delivers a 51 hours power reserve. [seikata-wm-f04dc2ca318c]

Also known as: Emperor, Flighty

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

37mm

Case Thickness

12.4mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

150m

Dial Color

Champagne

Jewels

32j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1974

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