Digital speed heart rate & cadence. Cateye have created an affordable wireless cycle computer capable of processing speed distance heart rate & cadence information using cross talk free 2.4GHZ digital wireless technology. Measuring your current/average/plus calorie expenditure the V3 clearly displays 4 readouts simultaneously. Additional features include a 99 lap counter data review & countdown distance functions automatic 2nd bike recognition & a backlight. It really doesn`t get any better than this.