Seiko Cal. 4478 - 707

The Seiko 4478-707 represents an important milestone in Seiko's 1975 lineup. Powered by the 4478 caliber with 25j jewels beating at 28,800 bph, it delivers a 36 hours power reserve. [seikata-wm-928e3e6f709a]

Also known as: Bellmatic, Sea Horse

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

37mm

Case Thickness

15.6mm

Lug Width

18mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

120m

Dial Color

Champagne

Jewels

25j

Frequency

28,800 bph

Power Reserve

36 hours

Year

1975

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