For demanding cyclists. CS400 is the choice for cyclists with a competitive attitude. Track your ride with wireless sensors, prepare your detailed training programme easily with Polar ProTrainer 5TM software and use the incline measurement to adjust your cycling effort accordingly. Buttons designed specifically for cycling plus a big display help you to track your performance even at maximum speed. Key features: • Wireless speed sensor • Energy output • Cycling limits • Incline measurement • Polar sport zones • SportZoneLock • Training planning with Polar ProTrainer 5TM • Infrared data communication • 99 memory files • ECG accurate heart rate with zones (% max)