Seiko Cal. 4412 - 300

The Seiko 4412-300 represents an important milestone in Seiko's 1978 lineup. Powered by the 4412 caliber with 17j jewels beating at 28,800 bph, it delivers a 47 hours power reserve. [seikata-wm-aec232437f66]

Also known as: Helmet, World Timer

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

8.7mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

Silver

Jewels

17j

Frequency

28,800 bph

Power Reserve

47 hours

Year

1978

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