The latest 37 mini keys portable roll-up piano keyboard is a good choice for beginners and children.

Features:
Portable， fashion， concise， easy to roll up and carry.
8 built-in instrument sounds in tone button. 
6 demo songs in demo button.
1 adjustable volume control.
1 speaker offering loud， clear and melodious sound.
Support tutorial， record， play and edit your own music.
Support earphone/external speaker position， won't disturb others while using earphone.
The red LED light on when playing.
Power-saving mode: smart sleep after 3 minutes with no play.
Tactile sensitivity and fun for beginners and young children.

Specifications:
Material: Silicone Rubber !#!amp!*! Plastic
Color: Black !#!amp!*! White
Gender: Unisex
Function: Educational
Toy Type: Electone
Power Supply：DC 5V Adapter or 4 * 1.5V AAA Batteries (Not included)
Plug Type: US / UK / EU (optional)
Length: 13-64cm / 5.1-25.2in
Item Size: Approx. 64 * 15 * 2cm / 25.2 * 5.9 * 0.8in
Item Weight: 464g / 16.3oz
Package Size: Approx. 21 * 15.5 * 8cm / 8.3 * 6.1 * 3.1in
Package Weight: 683g / 24.1oz

Packing Lists: 
1 * Roll-up piano 
1 * DC 5V adapter
1 * User manual (English)