Clinically accurate blood pressure designed for professional settings. High BP (Hypertension) affects nearly one third of Americans. Omron Healthcare made the 907XL, which is designed to reliably help physicians diagnose if a patient suffers from this condition.In The Box Blood Pressure Monitor Cuffs (Extra-Large (17″ to 20″), Large (13″ to 17″), Medium (9″ to 13″), and Small (7″ to 9″) BladderSet 1.3m AirTube ACAdapter BatteryPack Features Display: Digital display Measurement: Oscillometric method Measurement Range: Pressure 0 to 299 mmHg Pulserate: 30 to 199 beats/min Accuracy: Pressure: Within ± 3mm H gor 2% Pulserate: Within ±5% of reading Inflation: Automatic inflation with pumping Deflation: Automatic deflation by electromagnetic control valve Air Release: Automatic rapid air release by electromagnetic control valve Pressure Detection: Electro static capacity semi-conductor pressure sensor Power supply: AC Adapter (120VAC, 60Hz, 13VA) or (120VAC,50/60Hz,0.2A) Battery pack (4.8 VDC, 6W) Electric Shock Protection Method: Class II Btype Operating Temperature: 50°F to 104°F (10 to 40°C) Weight of Main Unit: Approx. 32oz (910g) External Dimensions: Approx.51/2”(W) x8”(H) x51/6”