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In-Ear Heart Rate Monitoring

1. Cosinuss° One

Watch the YouTube video here: Einleitung cosinuss° One – Puls messen ohne Brustgurt

2. The alternative to a chest strap

Cosinuss °One is an in-ear heart rate monitor.

  • Heart rate
  • Heart rate variability
  • Body temperature

Comfortable °One is the smallest and most lightweight heart rate monitor on earth – only 6,5 g on 4 x 4 cm. Sporty ergonomics and well-tolerated materials.

Precise With °One, optical pulse measurement is for the first time as precise as data collected electrical. Patented earconnectTM technology in the ear sensor.

Compatible All devices, which have bluetooth LE or ANT+, could be linked with °One. Compatible with smart watches, bicycle computers and fitness apps.


Note: Please note that the new sensor models of the cosinuss° One no longer support data transmission via ANT+. This applies to sensors with LOT number 2201 and higher. We explain where you can find the number on your sensor here °One FAQ.

Updated on 6. March 2023

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