37-Key Electronic Keyboard, Multi-Function Portable Electric Piano Keyboard With Products Size: 20.67in * 8.59in * 2.28in Weight: 3.5 lb 37 Keys 200 Tones and 200 rhythms 50 Demos songs Song Record/ Play Control and effect: 37 sound Effects, volume control, tempo control, transpose Sustain/Vibration/Echo/OKON/GUIDE/FOLLOW /Metronome DOUBLE SPEAKER Built-in 3.7V Li-ion Battery ACCESSORIES: 1XMICROPHONE 1X USB TYPE C POWER CORD (WITHOUT ADAPTER) ?Problems of low-cost toy electronic keyboard: 1. The adoption of low-end IC audio source and the cheap single speaker makes the sound unbearable. 2. The white key is only 1.5mm in width that difficult for children over 5 years old to use. 3.Poor timbre and rhythms, low play-ability. 4.No polyphony function and can?t play songs. 5.61-key or 54-key electronic keyboards sound fine but is expensive and not portable, and most are powered by AA batteries or AC Adapts. ?SUNLP 37-Key Electronic Keyboard: 1. High-end IC sound source adopted, dual speakers design, and greatly upgraded speaker configuration: heightened and thickened magnetic steel enlarged frame rubber edge better voice coil to provide better sound effect and level. 2. 1.8mm bigger size white keyboard with Imitation wood grain design, more similar to the real piano, can be easily used by older children. 3. 200 tones and 200 rhythms 50demos, With 8 voices of polyphony, easy for you to play song chords. Small size but with big fun. 4. We have a built-in 3.7V Li-ion battery, which can last for 6 hours after charging.The weight only 1.6kgs makes it easy to carry. Shipping: Shipping is complimentary within the lower 48 US States. We Do Not Ship to PO/APO Boxes, HI or Alaska We Do Not Ship Outside of the Continental US All items ship within 24-72 hours of Payment For large items that require Freight shipping a valid phone number is required to call and schedule your delivery Terms of Sale and Feedback: Feedback is extremely important to us and If you are satisfied with our transaction, please take a moment to leave Positive Feedback. YOUR Satisfaction is our #1 Priority! If there are any issues, PLEASE contact us BEFORE leaving a neutral or negative rating so that we may resolve any concerns. We PROMISE we can make you happy if you give us a fair chance. Returns / Concerns: All items qualify for returns within 14 - 30 days of receipt. Buyer is responsible for return shipping on any item that is not damaged Please be sure this is an item you want before making your purchase. Customer Satisfaction is our TOP priority! All items are IN STOCK at time of listing. Inventory changes constantly and it is impossible to maintain a perfectly accurate count of all items. Please do not penalize us if we have to issue you a refund! Thank You For Your Business!