Profile: Telozo Gmbh provides measuring instrument and telemedicine device systems. We develop clue medical, which is a new type of cardiac measuring instrument that makes heart measurements possible, any time and at any place. On the basis of an electrocardiogram, the mobile event recorder measures heart & heart rate variability (HRV) at the same time and warns against nervous stress & burnout. We offer clue medical device which is a light, small, and versatile, miniaturized telemedicine device system for recording, transmitting and processing signals derived from an electrocardiogram. The recording time of 2 minutes and a sampling rate of 1 kHz allows clue medical to prepare information about the heart rate variability & the influence of the autonomic nervous system on heart activity and the cardiovascular system. Our clue medical is designed for medical use by doctors and hospitals. This medical device provides a 1-channel ECG, a signal-averaged ECG, measures heart rate variability, analyses sympathetic-parasympathetic regulation and performs spectral analysis.