Riding under dense tree canopies and through otherwise covered areas can wreak havoc on GPS connectivity, causing unfortunate disruption in our careful data tracking tendencies. The Wahoo Fitness RPM Speed Sensor lets you confidently collect continuous speed data whether you're exploring majestic forest roads or indoors, buried in a pool of sweat, cranking out intervals on the KICKR Smart Trainer. This sensor features wireless ANT+ and Bluetooth connectivity to easily pair with your smartphone, tablet, or GPS device of choice. Disguised as a small, discreet pod, it mounts stealthily to your hub to gather important speed data on the road, trail, or your living room. The Wahoo Fitness RPM Speed Sensor runs on an easy-to-replace CR2032 battery. It comes packaged with a pre-installed battery, hub mount, a quick start guide, and a product info guide.