The ECG 1203 3 electrocardiogram setup is portable and easy to manage. It uses three channels and six channels for the ECG waveform. The Ni-Mh battery on the inside is easy to recharge and allows for the unit to be used as needed. This is made with twelve leads and can show the connectios on the setup as well as printer error data if necessary. The two-inch LCD screen is easy to read and will let you set up a system with an automatic, manual, single key, selection or interpretation reading setup. This uses three channels for interpretation and can handle up to 100 saved readouts as necessary.