The BPM112 monitors blood pressure using pressure sensor. With oscillometric method, it measures pressure of 30 to 280 mmHg with -/+ 3mmHg accuracy and pulse of 40 to 199 per minute with -/+ 4% of reading accuracy, all in 30-second to 1-minute time. It can be operated with a touch of a button and inflates and deflates on its own. Sixty sets of memory are in-built in the BPM112. It runs on 2 AAA batteries and shuts off automatically to save power. Overall, it only weighs 135g.