The award winning Diamondback Fitness 510Sr Recumbent Exercise Bike delivers an exceptional workout of any level while sitting down. With a sculptured seat base and back rest, the 510Sr takes the pressure off the back and reduces jarring impact to the joints while delivering extremely effective aerobic exercise. The 510Sr delivers a proven, low-impact workout even for people recovering from joint injuries, chronic pain, or looking to get their heart rate up safely during pregnancy. Features that take the Diamondback 510Sr Recumbent a cut above the competition include: 20 workout programs and 16 levels of resistance; easy to read and operate LCD display with QuickSet programming; adjustable console and handlebar angles; full-service media center with speakers; and ultra-quiet operation thanks to its smooth and quiet frictionless eddy current braking system. Given a "Head of the Class" award from Fitness Professor Review and backed by comprehensive warranties, you can't go wrong with the