Thomson Cardio W6 Wrist blood pressure monitor. The instrument allows automatic measurement of systolic and diastolic pressure. It also allows the indication of the pressure level WHO classification. detection and indication of cardiac arrhythmia (irregular heartbeat). The design of the device includes: Large LCD display: 36.6 x 41.6 mm. Multi-user (for use by up to 2 people). Memory of 90 measurements per user. It works with 2 AAA alkaline batteries not included. It also allows automatic calculation of the average of the last 3 measurements. Small size, easy to carry