Seiko Cal. 4430 - 310

The Seiko 4430-310 represents an important milestone in Seiko's 1976 lineup. Powered by the 4430 caliber with 34j jewels beating at 28,800 bph, it delivers a 57 hours power reserve. [seikata-wm-e12389c7901e]

Also known as: Bullhead, Baby Tuna

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

38mm

Case Thickness

11.9mm

Lug Width

19mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

190m

Dial Color

Silver

Jewels

34j

Frequency

28,800 bph

Power Reserve

57 hours

Year

1976

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