PN61S 61-key Hand-Rolled Foldable Piano Thickened Portable Beginner Keyboard 1. Material: Silicone 2. Soft and comfortable, long-term use will not break, tough and durable 3. Fully sealed design, waterproof, dust-proof, oil-proof, fire-proof, anti-corrosion, and can be cleaned and disinfected in water 4. Can be curled at will, easy to carry and save space 5. 61 standard keys, the keyboard size is 1:1 equal to the real piano 6. The unique multi-touch structure design inside the keyboard makes it feel better 7. Built-in high-quality speakers, external speakers or headphones can be connected 8. One-key sustain function, a more delicate sustain analog piano sound 9. Connect to the computer through the MIDI interface, combined with the use of professional software, to achieve functions such as hand-rolled piano composition creation 10. The control box has a non-slip and scratch-resistant design, and the body can be fixed during use 11. You can connect an external power adapter or install 4 AAA batteries (not included in delivery) 12. Weight: 1.35 kg 13. Dimensions: 100x24 cm (after unfolding)