Smart Heart Rate Monitor applies both ANT+ and Bluetooth technology. It wirelessly transmits your heart rate to cycling computers and smart phones. - Elevate your training: Smart Heart Rate Monitor providing real-time and accurate heart rate data during exercise. - Dual Connectivity: Utilizing both ANT+ and Bluetooth technologies, wirelessly transmit heart rate data to cycling computers, smartphones, smartwatches, and more. - All-Weather Performance: With sweat-proof rating delivers accurate readings even during high-intensity training. - Comfortable Fit: The soft elastic strap ensures a comfortable fit, and its both replaceable and washable for convenience. - Long-lasting Power: Powered by a CR2032 battery (included), the Smart Heart Rate Sensor offers up to 730 hours of working time and is easily replaceable.