Citizen Blood Pressure Monitor Ch-650 - Wrist circumference range - 13.5~21.5cm |
Body movement indicator , Irregular heartbeat indicator . |
Accuracy - Pressure: -/+ 3 mmHg Pulse: -/+5% of reading . |
Power source - 2AAA batteries (LR03) Battery life - Alkaline: Approx. 400 times (180 mmHg, once/day, 22℃) . |