In the days of the original iPhone, there was a simple choice to be made when buying a new smartphone - would you buy an iPhone or would you buy a model made by the competition, say an HTC or a Samsung device?
Quality Electrical Portable Roll-up piano. Design in compact size.
Foldable and easy to carry around. With inner connection of amplifier: earphone/amplifier (home theatre), it can be connected externally. The merchandize has earned vast popularity over North America and Japan. It's entertaining for all kinds of musical events and educational for kids' piano practice.