Seiko Cal. 6628 - 450

The Seiko 6628-450 represents an important milestone in Seiko's 1970 lineup. Powered by the 6628 caliber with 32j jewels beating at 28,800 bph, it delivers a 47 hours power reserve. [seikata-wm-be4fdf96bdc4]

Also known as: Helmet

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

35mm

Case Thickness

15.1mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Silver

Jewels

32j

Frequency

28,800 bph

Power Reserve

47 hours

Year

1970

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