Feature: 1. With 21 keys of rich range, the thumb piano has more playing space than 17 keys. 2. Carefully polished beech wood material, the surface is smooth and round, which has good hand feels. 3. Compact size with storage bag for conveniently take away with you. 4. Comes with a music book, easy to get started for kids and new beginners. 5. It can produce a soothing and calming sound, you will enjoy to play with this little instrument. Specification: Features: With 21 keys of rich range, the thumb piano has more playing space than 17 keys. Carefully polished beech wood material, the surface is smooth and round, which has good hand feels. Compact size with storage bag for conveniently take away with you. Comes with a music book, easy to get started for kids and new beginners. It can produce a soothing and calming sound, you will enjoy to play with this little instrument. Specifications: Material: Beech+resin+metal Item Size: 160 * 145 * 20mm / 6.30 * 5.71 * 0.79in Item Weight: 500g / 17.64oz Package Weight: 750g / 26.46oz Package Size: 23 * 19 * 7.5cm / 9.06 * 7.48 * 2.95in Packing List: 1 * 1 * Tuning Hammer 1 * Storage Bag 1 * Wipe Cloth 1 * Musical Note Sticker 1 * Music Book Package List: 1 * 1 * Tuning Hammer 1 * Storage Bag 1 * Wipe Cloth 1 * Musical Note Sticker 1 * Music Book