Seiko Cal. 4457 - 273

Seiko 4457-273

The Seiko 4457-273 represents an important milestone in Seiko's 1974 lineup. Powered by the 4457 caliber with 25j jewels beating at 36,000 bph, it delivers a 72 hours power reserve. [seikata-wm-89b2c587cbae]

Also known as: Tuna, Bellmatic

Specifications

Movement
Kinetic
Case Material
PVD Black
Case Width
35mm
Case Thickness
12.3mm
Lug Width
21mm
Crystal
Acrylic
Bezel
Rotating
Water Resistance
170m
Dial Color
White
Jewels
25j
Frequency
36,000 bph
Power Reserve
72 hours
Year
1974

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