The New Galix Holter Analyzer model Winter is an extremely powerful tool for the medical professional for use in the detection and evaluation of cardiac arrhythmias. This software is used in conjunction with the GBI-3S Holter Recorder. It allows the user to modify channel gain, polarity, disable a channel in the case of a bad recording in that single channel. It also presents the user with statistical graphs depicting time & frequency domains of HRV, signal quality record verification, ST-deviation, beat classification. The possibility to record audio comments using a PC-microphone, Sleep Apnea, Atrial Fibrillation, Pacemaker analysis, new complete standardized report are some of the new features that have been added to this software.