The Basis B1 band’s centerpiece is the optical engine that tracks heart rate by directing light into the skin to view actual blood flow.

The Basis B1 band, along with monitoring heart rate, uses its mutilple sensors to calculate calories burned, amount of physical activity and sleep patterns.

The optical engine is also featured by four other sensors including two heat sensors that track skin and ambient temperature changes; a 3-axis accelerometer that records movement and activity; and galvanic skin response sensors that help track the intensity of activity by measuring sweat levels.

The display provides real-time metrics such as heart rate.

The modular design also features interchangeable bands to suit style and color preferences.

The technology behind the Basis B1 band sensors provides data that is uploaded to a cloud-based service, where the user is able to view a personalized dashboard of their results and accomplishments.