DWD-2201 wrist blood pressure monitor Product descriptions: 1) Measuring range:0-300mmHg/0-40.0kPa 2) Measuring accuracy: +-0.4kPa/+-3mmHg 3) Min. Scale:0.1kPa/1mmHg 4) Memory:60 group memories 5) Auto shut-off (30sec after idle) 6) Battery: AAA x 2, alkaline batteries 7) Battery life: Approx.2 months (at 3min per day) 8) Size:65 x 78 x 28mm 9) N. W.:128g (including battery)