Features:_x000D_
Intelligent automatic compression and decompression._x000D_
Measure systolic,diastolic and pulse at the same time. _x000D_
Easy to operate,switching button to start measuring._x000D_
60 store groups memory measurements._x000D_
Can read single or all measues._x000D_
3 minutes automatic power saving device._x000D_
Intelligent device debugging,automatic power to detect._x000D_
Local tests for: wrist circumference as 135-195mm._x000D_
Large-scale digital liquid crystal display screen._x000D_
High-accuracy._x000D_
1*AAA battery needed.(Not Included)._x000D_
The English instruction is included. _x000D_