This Sigma Onyx Fit Watch is perfect for runners who want to track their heart rate while on the go. The detachable and wireless watch comes with a heart rate monitor and batteries as its power source. The black color complements any running outfit and the stopwatch and lap timer features make it easy to track progress.

The bike computer is suitable for cycling enthusiasts as well and has a variety of useful features like measuring heart rate, distance, and time. The Sigma Onyx Fit Watch is a must-have for anyone who wants to improve their fitness level.

In Good Working Condition. Comes with everything shown

Removable and Replaceable batteries in both the watch and chest piece.