Description: Durable Material: Premium silicone drum sound inside, brings you nature and powerful sound effect. Special Design: Professional demo inside, convenient to study. Audio input and output, excellent expandability for other devices. Useful Function: Without speaker, you need to connect it with external speaker to enjoy the sound, and in order not to bother others, you can also connect headphones when you play the drum. Dual Power Supply Choices: 2 * AAA batteries (not included) or powered by computer, laptop, DC 5V power adapter via the included USB cable. Meaningful Tool: Compact size electronic drum set, specially designed for drum set learning and practicing of kids or beginners, very convenient to carry and store. Specification: Color: Black. Material: Silicone. Size: Approx. 41.00*27.00*35.00cm/16.14*10.63*13.78in. Port: Mini USB. Input voltage: USB 5V or 2 * AAA (1.5V) (excluding AAA battery). Note: There might be a few color distortions due to different computer resolutions. There might be a slight error due to different hand measurements. Package Includes: 1 Piece Electronic Drum. 2 Pieces Drum Sticks. 1 Piece USB Cable. 1 Piece User Manual. 1 Piece Pedal Set.