A watch says a lot about the personality of its wearer. As a sporty companion on your wrist, it needs to fit your style AND meet your individual training demands. With the new iD.Series, Sigma Sport is committed to providing the right watch for every type of athlete. If you’re looking for an inexpensive beginner sports watch with heart rate measurement, the iD.Is the one for you. It has an attractive design with a large display and offers ECG-accurate heart rate measurement via the supplied chest strap. Operation with just one button is very simple and you get all this at a very attractive price.