| | Model | T631 | T621 | T611 |
| | MSRP | $5,299 | $4,199 | $2,999 |
| | Dimensions | 83.5" x 38.6" x 56.3" | 83.5" x 38.6" x 56.3" | 77.5" x 38" x 53" |
| | Unit Weight | 297 lbs. | 297 lbs. | 229 lbs. |
| | Motor | 4.0 hp AC Servo | 3.2 hp DC | 3.0 hp DC |
| | Running Surface | 22" x 61" | 22" x 61" | 20" x 58" |
| | Speed Range | 0.1 - 12 mph | 0.1 - 12 mph | 0.1 - 12 mph |
| | SafeStart™ | Yes | Yes | Yes |
| | Incline Range | 0 - 15% | 0 - 15% | 0-15% |
| | Deck Cushioning | MyFlex™ | MyFlex™ | MyFlex™ |
| | Programs | 3 Interval (1:1, 1:2, 2:2), Random (x10,000), 2 Glute (30-min. and 45-min.), 3 Hill, HRC Cardio, HRC Weight Loss, Quick Start, Manual/Track, Zone Trainer, Fitness Tests (Bruce, Gerkin, WFI, Army, Marines) | Programmable Interval, Random (x10,000), 2 Glute (30-min. and 45-min.), 3 Hill, HRC Cardio, HRC Weight Loss, Quick Start, Manual/Track, ZoneTrainer™ | Programmable Interval, Random (x10,000), 2 Glute (30-min. and 45-min.), 3 Hill, HRC Cardio, HRC Weight Loss, Quick Start, Manual/Track, ZoneTrainer™ |
| | Touch-N-Go™ Programs | Yes | Yes | Yes |
| | Display | Dot matrix and LEDs | Dot matrix and LEDs | Tri-color dot matrix and LEDs |
| | Water Bottle Holder | Yes | Yes | Yes |
| | ActivZone™ | Yes | Yes | Yes |
| | Data Readouts | Calories, Calories per Hour, Speed, METs, Time, Distance, Pace and Incline, Heart Rate, Wt Loss and Cardio Target HR | Calories, Calories per Hour, Speed, METs, Time, Distance, Pace and Incline, Heart Rate, Wt Loss and Cardio Target HR | Calories, Distance, Speed, Incline, Time, Calories per hour, METs, Pace, Heart Rate, Wt Loss Target HR, Cardio Target HR |
| | CardioAdvisor™ | Yes | Yes | Yes |
| | Telemetry Heart Rate | Yes | Yes | Yes |
| | Contact Heart Rate | Yes | Yes | No |
| | Max User Weight | 450 lbs. | 400 lbs. | 400 lbs. |
| | Entertainment Bracket Compatible | Yes | Yes | Yes |
| | Residential Parts Warranty | Lifetime frame, motor and mechanical parts, 7 years electronic | Lifetime frame and motor, 10 years mechanical parts, 5 years electronics | Lifetime frame and motor, 10 years mechanical parts, 5 years electronics |
| | Residential Labor Warranty | 1 year | 1 year | 1 year |
| | Suggested Commercial Usage | 6 hours max per day, no fees facility | 4 hours max per day, no fees facility | 4 hours max per day, no fees facility |
| | Commercial Parts Warranty | Lifetime frame, lifetime motor, 5 years parts | Lifetime frame, 5 years parts | Lifetime frame, 5 years parts |
| | Commercial Labor Warranty | 1 year | 1 year | 1 year |
| | USB | Yes | No | No |
| | FlowTec™ Motor | Yes | Yes | Partial |
| | Certifications | CONFORMS TO ANSI/UL 1647 2010 & CAN/CSA C22.2 No 68-09 2010; FCC part 18 OK | CONFORMS TO ANSI/UL 1647 2008 & CAN/CSA C22.2 No 68-09 2010; FCC part 18 OK | CONFORMS TO ANSI/UL 1647 2008 & CAN/CSA C22.2 No 68-09 2010; FCC part 18 OK |
| | Power Requirements | Dedicated Power Supply Required (N. Amer.): 120 VAC, 60 Hz, 15A, 1800W; Plug: UL NEMA 5-15; Cord: 14 AWG CSA-approved; Fuse: 15A (6x30mm), 100-120V, Fast blow | Dedicated Power Supply Required (N. Amer.): 120 VAC, 60 Hz, 15A, 1800W; Plug: UL NEMA 5-15; Cord: 14 AWG CSA-approved; Fuse: 15A (6x30mm), 100-120V, Fast blow | Dedicated Power Supply Required (N. Amer.): 120 VAC, 60 Hz, 12A, 1440W; Plug: UL NEMA 5-15; Cord: 14 AWG CSA-approved; Fuse: 12A (6x30mm), 100-120V, Fast blow |
