Portable: Roll Up Drum Set adopts a lightweight roll up design, which is easy to carry and store, suitable for on the practiceBuilt in speakers: Hand Roll Drum Kits's speaker system allows you to enjoy an extraordinary audio experience and make your drumming come aliveCharging function: Portable Electronic Drum is equipped with USB charging function, which is not only convenient to use, but also environmentally friendly and energy savingDTX game compatibility: Electric Drum Set enhances your drumming fun by connecting DTX games, providing interactive and engaging experiences for users of all agesMaterial: Percussion Instrument is made of ABS and silicone, with vivid cartoon patterns to attract children's attention while they play Specification: Material:ABS,Silicone Size Chart: 40cmx25cm/15.75inchx9.84inch Package Includes: 1 Hand Rolled Drum set Note: Please allow slight errors of 1-2cm differences due to manual measurement.