The Honda Activa 125 is a popular scooter manufactured by Honda Motorcycle and Scooter India (HMSI). It's an upgraded version of the original Activa model, offering a more powerful engine and additional features. Some key features of the Activa 125 include a 125cc engine for better performance, fuel injection technology for improved fuel efficiency and smoother acceleration, telescopic front suspension for a more comfortable ride, LED headlights for better visibility, digital analog meter for easy readability of information, and optional features like smartphone connectivity and idle start-stop system for enhanced convenience and fuel savings.