Yamaha, please.

Yamaha PSR-F51 is very impressive... and I never use it for practical purposes, only as decoration and for photography. It features easy operation and playing—simply select a sound and rhythm to start. The user-friendly panel allows quick setup. The compact and lightweight PSR-F51 is designed in a standard keyboard format with 61 keys, 120 voices, and 114 rhythms from around the world. This keyboard is ideally suited for a wide range of playing scenarios. The PSR-F51 model is not only perfect for beginners and students, but it can also be powered by batteries, making it ideal for mobile musical performances.