Model no.: BP B2 Easy Dimensions: 131 x 90 x 60.5 mm Weight: 277 g (including batteries) Voltage source: 4 x 1.5 V alkaline batteries; size AA or mains adapter DC 6V, 600 mA (optional) Measuring range: 20 – 280 mmHg (blood pressure) 40 – 200 beats per minute (pulse)