Seiko Cal. 4431 - 915

Released in 1981, the Cal. 4431 with design code 915 was part of Seiko's domestic market collection. Powered by the 4431 caliber with 23j jewels beating at 28,800 bph, it delivers a 69 hours power reserve. [seikata-wm-92d4274be7ff]

Also known as: Rally, Silverwave

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

39mm

Case Thickness

11.9mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Silver

Jewels

23j

Frequency

28,800 bph

Power Reserve

69 hours

Year

1981

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