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 ModelG572rG572uUB521MC572rC572uC532rC532uC521rC521uC510
 Dimensions (LxWxH)72" x 26" x 53"45" x 24" x 55"69.3" x 31.5" x 55"71.75" x 25.875" x 52.625"45" x 23.5" x 55.25"66" x 26" x 51"40" x 22" x 56"66" x 26" x 51"40" x 22" x 56"41" x 26' x 48"
 Unit Weight240 lbs.161 lbs.247 lbs.240 lbs.161 lbs.156 lbs.121 lbs.156 lbs.121 lbs.117 lbs.
 Resistance SourceGeneratorGeneratorElectro-magneticElectro-magneticElectro-magneticElectro-magneticElectro-magneticElectro-magneticElectro-magnetic44lbs Flywheel
 Power SourceSelf-generatingSelf-generating110vSelf-generatingSelf-generatingSelf-generatingSelf-generatingSelf-generatingSelf-generatingUser powered
 Step ThroughYesN/AYesYesN/AYesN/AYesN/AN/A
 Low-Profile ShroudN/AYesN/AN/AYesN/AYesN/AYesN/A
 Adjustable Seat BackYesN/AN/AYesN/AYesN/AYesN/AN/A
 Fore and Aft Seat AdjustYesYesYes, 20 positionsYesYesYesYesYesYesYes
 Resistance Levels202020 (bi-directional)202020202020Unlimited
 Integrated FanYesYesNoYesYesNoNoNoNoNo
 ProgramsManual, Random, Plateau, Fat Burn, Interval (1:1, 1:2, 2:2), Quick Start, Custom HR, Cardio & Weight loss HR, Fitness TestManual, Random, Plateau, Interval (1:1, 1:2, 2:2), Fat Burn, Quick Start, Custom HR, Cardio & Weight Loss HR, Fitness TestCustom Interval, Random, Hill, Track, Iso Kinetic, Iso Strength, Custom HR, Cardio/Wt LossManual/Track, Random, Fit Test, Cardio/Wt Loss, Interval (1:1, 1:2, 2:2), Plateau, Fat Burn, Custom HR, Quick StartManual/Track, Random, Fit Test, Cardio/Wt Loss, Interval (1:1, 1:2, 2:2), Plateau, Fat Burn, Custom HR, Quick StartHill (x3), Interval (x2), Manual/Track, Random, Weight Loss HRC, Cardio HRC, ZoneTrainer™, Plateau, Quick Start, 4 User IDsHill (x3), Interval (x2), Manual/Track, Random, Weight Loss HRC, Cardio HRC, ZoneTrainer™, Plateau, Quick Start, 4 User IDs Hill (x3), Interval (x2), Manual/Track, Random, Weight Loss HRC, Cardio HRC, ZoneTrainer™, Quick Start, 4 User IDsHill (x3), Interval (x2), Manual/Track, Random, Weight Loss HRC, Cardio HRC, ZoneTrainer™, Quick Start, 4 User IDsNo
 Touch-N-Go ProgramsYesYesYesYesYesYesYesYesYesNo
 Data ReadoutsCalories, Distance, Time, Speed, RPM, Calories/Hour, METS, WATTS, Heart rate (Actual, Weight loss, Cardio conditioning), Workout Level, Green EnergyCalories, Distance, Time, Speed, Calories/Hour, METS, WATTS, Heart Rate (Actual, Weight Loss & Cardio Conditioning), RPM, Workout Level, Green EnergyWorkout level, Calories, Time, RPM, Distance, METS, Watts, Speed, Actual heart rate, Target heart rateCalories, Distance, Time, RPM, Calories per hour, METs, Watts, Speed, Percentage of Goal Completed, Workout Level, Actual Heart Rate, Weight Loss Target Heart Rate, Cardio Conditioning Target Heart RateCalories, Distance, Time, RPM, Calories per hour, METs, Watts, Speed, Percentage of Goal Completed, Workout Level, Actual Heart Rate, Weight Loss Target Heart Rate, Cardio Conditioning Target Heart RateSpeed, Watts, Calories, Calories/hr, RPM, Distance, Time, Resistance Level, Heart Rate, Target Heart RateSpeed, Watts, Calories, Calories/hr, RPM, Distance, Time, Resistance Level, Heart Rate, Target Heart RateSpeed, Watts, Calories, Calories/hr, RPM, Distance, Time, Resistance Level, Heart Rate, Target Heart RateSpeed, Watts, Calories, Calories/hr, RPM, Distance, Time, Resistance Level, Heart Rate, Target Heart RateNo
 DisplayDot matrix and LEDsDot matrix and LEDsDot matrix and LEDsDot matrix and LEDsDot matrix and LEDsDot matrix and LEDsDot matrix and LEDsDot matrix and LEDsDot matrix and LEDsNo
 ActivZone™YesYesYesYesYesYesYesYesYesNo
 CardioAdvisor™YesYesYesYesYesYesYesYesYesNo
 Entertainment Bracket CompatibleYes, or CESYes, or CESNoYesYesYesYesYesYesNo
 Max User Weight500 lbs.500 lbs.500 lbs.500 lbs.500 lbs.450 lbs.450 lbs.400 lbs.400 lbs.350 lbs.
 Contact Heart RateYesYesNoYesYesYesYesNoNoNo
 Telemetry Heart RateYesYesYesYesYesYesYesYesYesNo
 Commercial Parts WarrantyLifetime frame, 5 years partsLifetime frame, 5 years partsLifetime frame, 5 years partsLifetime frame, 5 years partsLifetime frame, 5 years partsLifetime frame, 5 years partsLifetime frame, 5 years partsLifetime frame, 5 years partsLifetime frame, 5 years partsFrame 5 years, Parts 2 years, Wear items 1 year
 Commercial Labor Warranty1 year1 year1 year1 year1 year1 year1 year1 year1 year1 year
 CSAFEYesYesNoYesYesNoNoNoNoNo
 USBYesYesYesYesYesNoNoNoNoNo
 CertificationsUL1647 5th Ed. 2011, C22.2 No. 68, FCCUL1647 5th Ed. 2011, C22.2 No. 68, FCCUL1647 5th Ed. 2011, C22.2 No. 68, FCC UL1647, C22.2 No. 68, FCC UL1647, C22.2 No. 68, FCC UL1647, C22.2 No. 68, FCCUL1647, C22.2 No. 68, FCCUL1647, C22.2 No. 68, FCCUL1647, C22.2 No. 68, FCC 
 Power RequirementsFor feedback to the grid, 208 - 220 VACFor feedback to the grid, 208-220VAC110VSELF-POWERED; Fuse: 2A/250V (5*20mm FAST)SELF-POWERED; Fuse: 2A/250V (5*20mm FAST)SELF-POWEREDSELF-POWEREDSELF-POWEREDSELF-POWEREDNone
 Use Profile   High-use facility 24/7High-use facility 24/7No fees facilityNo fees facilityNo fees facilityNo fees facility