ORO-N2BASCI electronic blood pressure monitor Measurement method: oscillometric Measurement range: pressure: 0 ~ 299 mmHg, pulse: 40 ~ 199 beats / minute Measurement accuracy: pressure: 3 mmHg, pulse: 5% Max. Heart arrhythmia recognition function Large 6 x 4 cm liquid crystal display Memory: 90 memories for 2 users Device dimensions: L x W x H: 118 x 110 x 52 mm (4.65 x 4.33 x 2.05 inch) Unit weight: 225 g 104.2 g cuff Cuff Size: 220 ~ 400mm (8.66 ~ 15.7in) Battery level Average of the last 3 measurements Date and time function Power supply: four AAA alkaline batteries (1.5 V) or from a DC6V micro USB AC adapter (requires separate purchase) Accessories: user manual, 4 AAA alkaline batteries, cuff Manufactured in accordance with international standards: ISO, MDD, CE Warranty: 24 months