60 groups memory function;Arrhythmia detection function(IHB); Automatically inflate and deflate;Automatic power-off function; Power: 4 AA size alkaline batteries; Measurement Range: Pressure: 0mmHg~299mmHg; Pulse: 40~200 times/min;Measurement Accuracy: Pressure: ± 3mmHg; Pulse: ± 5% of reading.