Seiko Cal. 4440 - 641

Seiko 4440-641

This Automatic model from 1983 features a 43mm Two-Tone case. Powered by the 4440 caliber with 25j jewels beating at 21,600 bph, it delivers a 37 hours power reserve. [seikata-wm-38b52c9e2a0e]

Also known as: Sumo, Golden Tuna

Specifications

Movement
Automatic
Case Material
Two-Tone
Case Width
43mm
Case Thickness
12.8mm
Lug Width
19mm
Crystal
Mineral
Bezel
Coin-Edge
Water Resistance
100m
Dial Color
Burgundy
Jewels
25j
Frequency
21,600 bph
Power Reserve
37 hours
Year
1983

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