The Performance Ergometer with our exclusive SmartRow power meter hardware offers the most accurate training data in the rowing world. Enjoy immerse workout metrics, preset training sessions or race users from around the world, all within our free SmartRow App! The Following Upgrades are included with the WaterRower Performance Ergometer: - SmartRow. - XL Rails. - 17" Handle Upgrade. - Tablet Arm With Phone Holder and Medium Tablet Holder. (large tablet holder sold separately)