Which brand of sphygmomanometer is more suitable for the elderly? Yanqing that sell all?

If the elderly have no hearing problems mercury sphygmomanometer can be, hearing is not very good on the use of electronic sphygmomanometer, a little bit of inaudible with a voice sphygmomanometer, wrist sphygmomanometer is not very suitable for older people, the best use of the upper arm type sphygmomanometer, sphygmomanometer OMRON brand on the good, Yanqing County Hospital, near the medical equipment store has.