Feature: 1. 37 Keys Design: The keyboard is designed with 37 keys, and the portable guitar keyboard can be carried and played at any time. 2. With 32 Note Polyphony: 32 notes polyphony is suitable for beginners to practice, allowing continuous notes to sound without being cut off. 3. With Lithium Battery: The 37 key keyboard piano has built in lithium battery, you can play directly by pressing the switch. 4. Natural Stereo: Advanced wave memory stereo sampling to reproduce natural instrument sounds in stereo. 5. Multifunctional Keys: With volume adjustment key, demo song duo, stop button, audio jack, headphone jack, microphone function, single speaker. Specification: Item Type: 37 Key Keyboard Piano Battery: Lithium battery 3.7V 1200mAh (built in) Product Size: Approx. 55 x 11.2 x 3.8cm / 21.7 x 4.4 x 1.5in Functions: 4 tones, 10 demo songs, volume adjustment, demo song joint singing and electro singing, stop button, volume knob, audio jack, headphone jack, microphone function, single speaker. . Package List: 1 x Electronic Organ1 x Strap1 x USB Cable1 x Connection Line1 x Microphone1 x User Manual