The Purpose Of This Document Is To Describe The Characteristics That The Successful Bidder Will Have To Meet In Order To Contract The Supply Of Devices For Performing Electrocardiograms (Ecg) Integrated Into A Mobile Phone That Allow The Patient To Self-Record An Ecg Strip At Home At Least Once A Week And, When Symptoms Appear, Print It On Paper And/Or Transmit It In Electronic Format To The Hospital For Review.