Seiko Cal. 4447 - 856

The Seiko 4447-856 represents an important milestone in Seiko's 1965 lineup. Powered by the 4447 caliber with 28j jewels beating at 36,000 bph, it delivers a 47 hours power reserve. [seikata-wm-1113c030eb78]

Also known as: Bullhead

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

46mm

Case Thickness

12.5mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

White

Jewels

28j

Frequency

36,000 bph

Power Reserve

47 hours

Year

1965

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