Seiko Cal. 4478 - 331

Seiko 4478-331

The Seiko 4478-331 represents an important milestone in Seiko's 1984 lineup. Powered by the 4478 caliber with 23j jewels beating at 28,800 bph, it delivers a 37 hours power reserve. [seikata-wm-866a65030037]

Also known as: Turtle, Bellmatic

Specifications

Movement
Hand-Winding
Case Material
Two-Tone
Case Width
42mm
Case Thickness
9.9mm
Lug Width
18mm
Crystal
Acrylic
Bezel
Bidirectional
Water Resistance
30m
Dial Color
White
Jewels
23j
Frequency
28,800 bph
Power Reserve
37 hours
Year
1984

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seikata-wm-866a65030037