The PowerTread treadmills were created by NordicTrack and they are no longer sold by the manufacturer because newer models have been created, but they are still regarded as quality treadmills. The basic models include the 5.0, 5.5 and 6.0. They're foldable and considered to be health-club quality.
About the PowerTread Treadmill
Each of the treadmills have touch controls and LED displays, as well as a safety tether that could be used during an emergency. It has Wireless Polar HeartRate Control Programs to help a runner reach his desired heart rate.