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Specifications
Name: OMRON Wrist Blood Pressure Monitor 
with Advanced Positioning Sensor (APS)
Model: HEM-637
Display: Digital display 
Measurement: Oscillometric method 
Measurement Range: Pressure; 0 to 299 mmHg, Pulse rate; 40 to 180 /min. 
Accuracy: Pressure; within +/-3 mmHg, Pulse rate; within 
+/-5% of reading 
Inflation: Automatic inflation with pump 
Deflation: Automatic rapid deflation 
Pressure Detection: Electrostatic capacity semi-conductor pressure sensor 
Power Supply: Two AAA batteries
Battery Life: Approximately 300 times of measurement when using
alkaline batteries (In case of the monitor is used three 
times a day inflating to 170 mmHg at the room 
temperature of 72°F)
Operating Temperature 
and Humidity : +50° to +104°F, 30 to 85% RH 
Storage Temperature 
and Humidity : -4° to +140°F, 10 to 95% RH 
Measurable 
Circumference of Wrist : 51/4'' to 81/2''
Weight of Main Unit : Approximately 51/2oz (not including batteries) 
External Dimensions : 3'' (W) x 2
1
/2'' (H) x 11/2'' (D) (not including 
the wrist cuff) 
Electric Shock Protection : Internal power supply appliance type B 
Accessories : Two AAA alkaline batteries, Carrying case, 
Illustrated Instruction Manual 
Note: These specifications, to improve performance, are subject to change without notice.