Seiko Cal. 4478 - 160

The Seiko 4478-160 represents an important milestone in Seiko's 1978 lineup. Powered by the 4478 caliber with 32j jewels beating at 28,800 bph, it delivers a 55 hours power reserve. [seikata-wm-fc3e11f6c64c]

Also known as: Bellmatic, Baby Tuna

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

15.6mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Black

Jewels

32j

Frequency

28,800 bph

Power Reserve

55 hours

Year

1978

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