Seiko Cal. 4437 - 380

The 4437-380 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 4437 caliber with 25j jewels beating at 36,000 bph, it delivers a 46 hours power reserve. [seikata-wm-58ec9bd43a7f]

Also known as: Rally

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

39mm

Case Thickness

8.2mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

130m

Dial Color

Blue Sunburst

Jewels

25j

Frequency

36,000 bph

Power Reserve

46 hours

Year

1981

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