Pedal Power Exercise Bike Generator AC/DC - Emergency Power 12vdc and 110v ac power Exercise bike sold separately (See description for details) Satisfaction guaranteed or your money back, Limited Life Time Warranty (See description for details). Includes real time power monitoring software for your computer or MAC IVRC Technology (Integrated 12V DC Voltage regulator battery charger 20 Amps) Engineered to use with a stationary exercise bike with square frame tubing like the Sunny Health & Fitness Pro Indoor Cycling Bike (Amazon product B002CVU2HG)