Seiko Cal. 4443 - 931

Seiko 4443-931

This Spring Drive model from 1975 features a 40mm Titanium case. Powered by the 4443 caliber with 17j jewels beating at 28,800 bph, it delivers a 62 hours power reserve. [seikata-wm-f2d0a3f5e0be]

Also known as: Monster, Sportsmatic

Specifications

Movement
Spring Drive
Case Material
Titanium
Case Width
40mm
Case Thickness
15.7mm
Lug Width
20mm
Crystal
Acrylic
Bezel
Coin-Edge
Water Resistance
40m
Dial Color
Burgundy
Jewels
17j
Frequency
28,800 bph
Power Reserve
62 hours
Year
1975

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