Seiko Cal. 4478 - 707

Seiko 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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