SportsArt C545U Upright Bike Led ConsoleSportsArt cycles are self generating; no outside power source required. The contact heart rate is standard and a wireless Polar HR receiver is built in, multiple language options are included (English, Spanish and French). KEY FEATURES: Fore mid aft seat adjustment allows for optimal seat positioning Unique low profile shroud allows easy access Oversized pedals feature quick strap adjustment for easy customization Self generating no outside power