Technical parameters Structure: Floating stable structure Weight: 21kg Expand Size: 59*91*48cm Package dimensions: 48*27*48cm Inertial wheel: 5.7KG, Dynamic balanced Drive mode: Direct drive Simulated slope: 8% Output Power: 0-2500W Wireless signal: bluetooth4.0 and ANT+ Deviation: ±2% Power source: 100-240V~1.5A,50-60Hz FE-C:support Bicycle applicable Rear axle opening: 130mm,135mm,142mm Rear axle type: quick release/barrel axis flywheel compatibility:Shimano or Sram 9/10/11s/12s flywheel 12-speed flywheel (requires replacement of tower base) Wheel size: 20”-29″MTB/700c RD Software adaptation: PowerFun, Zwift, PerfPro,etc. Software adaptation Support Multiple mainstream riding software such as:PowerFun,Onelap,Zwift,TrainerRoad,PerfPRO, BKOOL,etc