49 Keys Hand Rolled Piano USB Charging Electric Folding Piano Keyboard for Kids Learning Beginners . 49 Keys Hand Rolled Piano USB Charging Electric Folding Characteristic: 1. PIANO FEATURES: This handheld roll-up piano has 8 sounds and 6 demo tracks, with self-recording function, learning function and 6-stage volume control. With its 49-key design, it can produce softer standard sounds. 2. BATTERY POWERED: This foldable piano has a built-in 450mAh lithium battery, equipped with a USB charging cable. Automatically turns off after 3 minutes of inactivity, reducing power consumption. 3. BUILT-IN SPEAKER: This portable roll-up piano has a built-in high-performance speaker that when connected to your phone can play songs to help with exercise, and when connected to a microphone, it can sing. 4. MULTIFUNCTIONAL INTERFACE: This foldable electronic piano has a multifunctional interface, supports MID, maintenance and recording, USB, external speaker, headphones and external power supply. 5. CONVENIENT USE: This flexible electronic keyboard can be rolled up to a small size and placed in a storage and carrying bag. Specially designed for children and beginners, suitable for daily teaching and exercise. . 49 Keys Hand Rolled Piano USB Charging Electric Folding Specification: Item Type: 49-Key Retractable Piano Material: silicone, plastic Power supply: 450 mAh lithium battery (built-in battery) Application: for children and beginners, teaching, practice . 49 Keys Hand Rolled Piano USB Charging Electric Folding List of packages: 1 x Retractable Piano 1 x USB Charging Cable 1 x User Manual in English . 49 Keys Hand Rolled Piano USB Charging Electric Folding