No more replacing button cells: Wahoo's Trackr heart rate monitor uses a rechargeable battery that is supposed to provide enough energy for up to 100 hours of training - a figure that is quite realistic based on our experience in our endurance test. One small disadvantage is that it uses its own charging cable...

The Wahoo Trackr takes the strengths of its predecessor and fixes its weaknesses. The battery life is now more than sufficient. Points are only deducted for the relatively high price.