Seiko Cal. 4477 - 238

The Seiko 4477-238 represents an important milestone in Seiko's 1977 lineup. Powered by the 4477 caliber with 25j jewels beating at 36,000 bph, it delivers a 69 hours power reserve. [seikata-wm-eac99a7bed1c]

Also known as: Sportsmatic, Crown

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

38mm

Case Thickness

15.7mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

60m

Dial Color

White

Jewels

25j

Frequency

36,000 bph

Power Reserve

69 hours

Year

1977

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