Don't be fooled by the simplicity of this self-powered treadmill. Manually operated and cordless, it provides a more intense workout than a traditional treadmill, so you'll improve more quickly and reach your goals faster. It offers six levels of resistance and has a battery-powered LCD display that lets you track your progress. It's the closest to running outside you can get without leaving your basement. PERFORMANCE: Made to last with commercial-grade structural steel and aluminum 100% manually powered with no electrical consumption Six levels of resistance, from none to the equivalent of uphill interval training Battery-powered LCD display shows time, distance, pace, speed, calories and watts WARRANTY: Frame: Lifetime Resistance Belt: 2 years Tread: 2 years Monitor: 2 Years