Sigma Sport products are synonymous with quality, value and outstanding customer service. Sigma products are hand tested and packaged in the Chicago suburbs, guaranteeing reliable performance. The SIGMA ROX 10.0 GPS features a highly sensitive GPS receiver and ANT+ wireless transmission technology (compatible with ANT+ based power meters). Create, modify and save routes with the included DATA CENTER 3 mapping and evaluation software. A dynamic elevation profile shows the rider"s current position and upcoming ascents and descents. With hundreds of functions, the SIGMA ROX 10.0 GPS is an exceptional value. The SIGMA ROX 10 Basic does not include ANT+ wireless speed, cadence, and heart rate transmitters. 249 hr. LOG capacity with 1, 2, 5, 10, 20, or 30 second recording interval.