e-CHARIty Naha Kokusai Street is a bicycle rental shop near Kokusai Street in Naha, Okinawa. It rents bicycles for traveling around Okinawa and also runs guided tours of historical sites such as Shurijo Castle. Multiple accounts report battery remaining after riding 60 to 100 km on the electric bicycles. Routes with many climbs and descents put a strain on physical stamina.