Scian LD-539 automatic digital blood pressure monitor device has 0-300mmHg blood pressure range, 40-160 beats / min pulse range, ± 3mmHg blood pressure accuracy, ± 5% heart rate accuracy, less than 4mmHg / min cuff tightness, + 10 ℃ – + 40 ℃ humidity temperature 85% and below, 110 x 8 x 52 mm dimensions.