Features of the Tacx Boost Trainer Bundle SIMPLE SETUP: With just two simple clicks, you?ll be ready to ride. SMALL BUT STABLE: This indoor trainer has a small footprint, 675 x 650 mm (26.6? x 25.6?), but provides a sturdy ride. EASY TO STORE: Multifunctional front wheel support serves as a handle to carry the trainer and ensures a natural cycling position. TRAIN WITH APPS: Included speed sensor allows you to track speed, distance and virtual power when training with your favorite apps1 such as the Tacx Training app, Zwift and TrainerRoad. Some apps may require a subscription. MAGNETIC BRAKE: You won?t need external power to use this trainer, thanks to a forceful magnetic brake that allows you to directly apply resistance or lighten it. RESISTANCE CONTROL: A simple lever on your handlebar lets you control the resistance; 10 levels, up to 1,050 watts. REALISTIC RIDE FEEL: An actual flywheel generates a realistic and smooth pedal stroke. SMOOTH AND QUIET: The closed resistance unit reduces noise and makes for a smoother ride. Specifications PHYSICAL DIMENSIONS: 26.6in. x 25.6in. (675 x 650 mm) DIMENSIONS WHEN FOLDED: 22.2in. x 16.1in. x 9.7in. (565 x 410 x 245 mm) WEIGHT: 18.8 lbs (8.5 kg) HEIGHT: 16.1in. (410 mm) WIRELESS COMMUNICATION: ANT+ connectivity, BLUETOOTH wireless Technology CONTROL BY: Handlebar resistance lever with 10 positions READ OUT ON: Smartphone, tablet, bike computer, computer with ANT+ antenna MAGNETS: 2 x 8 permanent ferrite magnets TRANSMISSION: Roller, 30 mm ELECTRICAL REQUIREMENT: No power required SUITABLE AXLES: Width of rear fork: Race 130 mm, MTB 135 mm. Adapters for other widths available. MAX POWER: 1050 Watt MAX TORQUE: 17 Nm MAX BRAKE FORCE: 50 N FLYWHEEL: 3.5 lbs (1.6 kg) MASS INERTIA: 20.2 lbs (9.2 kg) CALIBRATION: Spin down OUTPUT: Speed and virtual power MEASURED SPEED