UPGRADE 3 CUSTOMIZED MODESDamkee leg exerciser electric as seen on tv can switch between 3 modes (Manual/Auto/Non - electric) with 12 speed levels. Auto P1-P12 modes intelligently shift speed & direction every 2 minutes for optimized muscle engagement. Note: In non - electric mode, pedal the fitness equiment manually by yourself without a power cable ERGO-MOTION JOINT SUPPORTDamkee low-impact under desk elliptical machine promotes healthy circulation and mobility during prolonged sitting. The leg exerciser is engineered to gently engage knees/hips while reducing muscle stiffness.With the under desk bike pedal exerciser, you can keep the legs moving when you have to sit all day