Features: – 4 Users Interface – Irregular Heartbeat Detection – Low battery Detection – Automatic Power -Off – Comes with WHO Blood Pressure Classification Indication Specifications: – Measurement Method: Osillometric Method – Measurement range: Pressure: 0-300 mmHg Pulse: 30-180 beats/minute – Measurment Accuracy: Pressure:+-3 mmHg Pulse:+-5% – Pressurization: Automatic Pressurization – Memory: 120 Memories – Power Source: 4 X AA batteries