Sigma Sport
Encyclopedia
Sigma Sport is a manufacturer of electronic sports equipment such as the Rox and Topline product lines of heart rate monitor
s, altimeter
s, and bike computers.
Heart rate monitor
A heart rate monitor is a personal monitoring device which allows a subject to measure his or her heart rate in real time or record his or her heart rate for later study...
s, altimeter
Altimeter
An altimeter is an instrument used to measure the altitude of an object above a fixed level. The measurement of altitude is called altimetry, which is related to the term bathymetry, the measurement of depth underwater.-Pressure altimeter:...
s, and bike computers.