B08WZFKN1Y Topuality Portable 49-key Roll-up Electronic Piano Keyboard 8 Tones 6 Demos Record Funtion Built-in Speaker with Echo Sustain Trill Effect 3.5mm Output with Built-in Battery

Portable Roll-up Electronic Piano: The flexible roll-up piano features 49 keys, featuring real piano tone with sustain, echo and trill effect, portable handy piano keyboard for carrying.
Easy Control Panel: 8 tones and 6 demos songs optional, record function and play, v-olume adjusting can be easily controlled with the side panel.
Daily Waterproof Silicone Keys: Soft silicone material makes the white and black keys smooth touch feeling, comfortable to touch and play.
Built-in Battery Powered: Powered with built-in 360mAh battery, it can be rec-harged with USB cable included.
3.5mm Audio Output: You can connect headphone or speaker to the electronic piano, for more fun with music.