Seiko 5M84A - Technical Guide - Water Resistance and Accuracy; Water Resistance Testing; Accuracy Testing

Cal. 5M84A
20/21
TECHNICAL GUIDE
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Water resistance test
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Accuracy test
Checkthewaterresistanceaccordingtothedesignatedspecicationofthewatch.
Measure the rate and make sure the value shows within ±0.50 s/d.
Use 10 seconds gate of the tester.
Marking on the case back Test method Applied pressure
WATERRESISTANT(WATERRESIST) Air overpressure test 3 BAR
WATERRESIST5BAR
Water overpressure test
and condensation test
5 BAR
WATERRESIST10BAR 10 BAR
WATERRESIST15BAR 15 BAR
WATERRESIST20BAR 20 BAR
SCUBADIVER’S(AIRDIVER’S)150m
Water-tightness and water
overpressure test and
condensation tests before/
after water overpressure
test
18.75 BAR = 150 (m) times 0.125
SCUBADIVER’S(AIRDIVER’S)200m 25 BAR = 200 (m) times 0.125
He-GASDIVER’S300m 37.5 BAR = 300 (m) times 0.125
He-GASDIVER’S600m 75 BAR = 600 (m) times 0.125
He-GASDIVER’S1000m 125 BAR = 1000 (m) times 0.125