Features: Clear and convenient key for easy playing. The keyboard can also help refine their music skills as they practice pressing individual keys, encouraging to different sound combinations. This piano is made of plastic materials, exquisites curved surfaces design and smooth design, which will not hurt children. The electronic piano adopts a thin and light design, which is easy to carry and suitable for outdoor performances. Equipped with an external microphone, let your child enjoy a different music journey, simulate stage of a concert, encourage children to express themselves through music. This keyboard set is a great gift option, suitable as birthday/Christmas gift/holiday gift. Specifications: Materials: Plastic Styles: 37 keys/54 keys 37 key length: about 40.8cm/16.06inch 54 key length: about 53cm/20.87inch Package Includes: 1pc Electronic Digital Piano note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.