Seiko Cal. 4436 - 431

The 4436-431 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 4436 caliber with 29j jewels beating at 28,800 bph, it delivers a 39 hours power reserve. [seikata-wm-ccd5582f2f39]

Also known as: Tuna, Rally

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

46mm

Case Thickness

14.3mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

120m

Dial Color

White

Jewels

29j

Frequency

28,800 bph

Power Reserve

39 hours

Year

1974

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