The H300 Holter runs on the H300 BTL CardioPoint-Holter evaluation software and has a 3/7-channel ECG Holter recorder. The H300 contains the same features as the H100 with the added benefit of providing its users with a pacemaker analysis and advanced analysis of QT, ST and HRV. The H300 offers up to 48 hour signal monitoring and high signal quality. The BTL Cardio-Holter software is contained within a portable, modern and well-designed user interface, making the product extremely user friendly. And with the USB and SD card interfaces it is easy to transfer data from the BTL over to PC.