The cosinuss° One is a professional fitness tracker monitoring multiple vital signs with stunning accuracy.
Inside this small and light ear plug the patented earconnect technology is taking vital sign monitoring to the next level. You can use the cosinuss° One with all devices featuring Bluetooth.
Heart rate & more. Without a chest strap.
The innovative in-ear sensor combines highest precision with ergonomics and comfort.
Heart rate measurements in the ear instead of using a restrictive belt around the chest? This is how it works.
COMFORTABLE
The cosinuss °One is the smallest and lightest heart rate monitor in the world – only 6.5 grams on 4 x 4 cm.
Ergonomic for sports and skin-friendly materials
PRECISE
Essential health-relevant data through the highest possible measurement accuracy with Deep Machine Learning.
Patented earconnect™ technology inside
COMPATIBLE
Connect to all devices with Bluetooth or ANT+ (see important note below) and integrate the cosinuss °One seamlessly.
Sports watches, bicycle computers and fitness apps.
In-Ear Wearable For Easy Vital Signs Monitoring
Easy to wear, skin friendly and multifunctional. That´s what the cosinuss° One is famous for.
Created to be more than a cheststrap.
Better Breathing
Do you feel like you can’t breathe? A tight chest band around your chest when you’re running is restricting you? Take a deep breath because these days are over now! With a lightweight device in your ear nothing will keep you from performing your best anymore.