Exercise Bikes Are Stationery Bikes Replicating A Moving Bicycle, And Help To Increase General Fitness, For Weight Loss, And Other Various Training Exercise . Bikes Boost Cardio Fitness , Provide A Low Impact Work Out And Strengthen Legs And Lower Body Muscles. Audio In,Heart Rate Test,Sound Box,Led(Yellow),With 8 Professional Exercise Programs. Window Display:Time,Distance,Resistance Level, Rpm,Speed,Calories,Heart Rate. With Usb Connector,This Bike Have Inner Mp3 Media Play System,You Can Down Load The Music Through Flash Disk And Enjoy The Music During Your Exercise Time. Adopt Round Tube 89Mm Strong Frame,Ensure The Machine Steadily And Durable And Looks Elegant. Resistance Adjustment System Self-Generated Motor Electronic System, Adjust The Resistance Conveniently At Any Time..Balance Weight Pedal And Adjustable Seat,Going By Somatology,Meet Different Person'S Exercise Requirement.Handhold Heart Rate Test Sensor,Make Sure You Can Control Your Heart Rate By Adjust Your Exercise Intension. Combine The Solid And Scroll Display Operate System,More Suitable. Additional Battery Power Supply Function:When The User Have A Break During The Exercise Period. The Battery Will Supply The Power To Support Window Display.30 Secs.If The User Don'T Back To Use The Machine, It Will Cut Down Power Supply.