Dr Morepen Blood Pressure Monitor BP 09 for Osillometric Method is a fully automatic blood pressure monitor with WHO blood pressure classification indication. It has a memory recall of 120 for 4 users. It comes with automatic power off facility, irregular heartbeat detection and a low battery indication to make you aware when to change batteries. It offers a one touch simple operation and a clock with 24 hrs format. Measurement range: Pressure: 0-300 mmHg Pulse: 30-180 beats/minute - Measurement Accuracy: Pressure: +-3 mmHg Pulse: +-5% - Pressurization: Automatic Pressurization - Memory: 120 Memories - Power Source: 4 X AA batteries.