Seiko Cal. 5640 - 955

Seiko 5640-955

This Quartz model from 1979 features a 45mm Two-Tone case. Powered by the 5640 caliber with 32j jewels beating at 28,800 bph, it delivers a 56 hours power reserve. [seikata-wm-31024cf02c63]

Specifications

Movement
Quartz
Case Material
Two-Tone
Case Width
45mm
Case Thickness
13.8mm
Lug Width
18mm
Crystal
Hardlex
Bezel
Coin-Edge
Water Resistance
180m
Dial Color
Black
Jewels
32j
Frequency
28,800 bph
Power Reserve
56 hours
Year
1979

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