LCD display, IHB arrhythmia detection, smart compression, voltage and electricity detection, -20 C ~50 storage temperature, 15%~90% storage humidity, 10 C ~40 C operation temperature, 40%~85% operation humidity, pulse scanning / oscillographic determination method of measurement, hypertension / hypotension 20 mmHg~280 mmHg range of measurement, 40~200 times / min pulse, + 3 mmHg accuracy, 3V voltage, battery not included.