Combining the real ride feel of KICKR with the natural motion of rollers, KICKR ROLLR smart bike roller trainer makes it easy to transition from outdoor riding to indoor cycling. FEATURES: Safety tire gripper allows for quick set-up Dual-roller design offers natural movement of rear wheel Power Meter Connect pairs to ANT+ power meters Measures speed and distance. Power meter required for power and cadence data SPECS: Maximum Power Output: 1500 Watts Maximum Simulated Grade: 10% Minimum Simulated Grade: -10% Product Weight: 50 lb / 23 kg Drivetrain: N/A Resistance Type: Electromagnetic Power Accuracy: Within +/-1% of external power meter (not included) Connectivity: ANT+, ANT+ FE-C, Bluetooth, Direct Connect Cassette: N/A Hub Types: N/A Adapters : N/A Maximum Rider Weight: 250 lb / 113 kg