At the heart of your training is the coded T31. Its purpose is simple: to transmit your heart rate to your wrist unit. Slim and light, the ECG (electrocardiogram) accurate transmitter is fully water resistant and designed for all weather conditions.
Meet your daily activities at different levels of intensity with the Polar A300 sports watch black. The durable silicone wristband waterproof A300 is light and comfortable. Tells you exactly how to make fitness is by measuring your aerobic fitness at rest and analyze your maximal oxygen uptake. The A300 shows you the number of steps, distance traveled and calories consumed and motivates you to achieve your business goal.