ORO-N1 BASIC electronic blood pressure monitor Measurement method: oscillometric Measurement range: pressure: 0 ~ 300mmHg, pulse: 40 ~ 199 beats / minute Measurement accuracy: pressure: 3 mmHg, pulse: 5% Max. Heart arrhythmia recognition function The pressure measurement result classification indicator acc. To WHO (World Health Organization) World health organization Liquid crystal display Memory: 120 memories for 2 users or 199 memories for 1 user Device dimensions: L x W x H: 135 x 112 x 71 mm (5.31 x 4.41 x 2.79 inches) Unit weight: 499.4 5 g (18.24 0.17 oz) (including batteries) Cuff Size: 220 ~ 420mm (8.66 ~ 16.54in) Storage / Transport Conditions: Temperature: -10 ~ 50 ° C (-14 ~ 131 ° F), Humidity: 90% R.H. Working environment: temperature: 10 ~ 40 ° C (50 ~ 104 ° F), humidity: 10% ~ 95% R.H. Power supply: four AA alkaline batteries (1.5 V) or from a DC6V micro USB power adapter (requires separate purchase) Battery life: approx. 250 measurements Accessories: user manual, 4 AA alkaline batteries, cuff Manufactured in accordance with international standards: ISO, MDD, CE Battery saving - the camera automatically turns off after 3 minutes Warranty: 24 months