B073WLLJTY Yamaha PSR-EW300 76-Key Portable Keyboard (power adapter sold separately)

A 76-Key Portable Keyboard with 574 Voices, 165 Styles and 154 preset songs
Yamaha Education Suite (Y. E. S. ) allows you to practice using the preset songs (or MIDI files on compatible instruments) at your own pace, one hand at a time, or both together.
Touch Tutor lesson mode tracks the velocity or strength the keys are played at in order to teach dynamics.
USB to HOST connectivity with MIDI and audio transfer means you only need one cable to connect to your music-making software.
KEYBOARD ONLY – AA Batteries or PA150 Adapter Required (sold separately)