49 Keys: Full-size electronic piano keyboard with 49 keys for children and beginners Portable & Rechargeable: Built-in rechargeable battery, perfect for on-the-go use (Charging time: 4 hours, up to 2400 hours of use) Smart Piano Teaching Function: Piano key lighting function for beginner-friendly learning Karaoke Microphone Included: Wired microphone for singing along to the tunes Multiple Tunes & Rhythms: 100 preset selectable tunes, 100 preset selectable audio rhythms, and 50 preset demos Recording & Playback: Record your own songs and play them back Multiple Sound Effects: Various keyboard sounds and tones to explore and enhance creativity Built-in Stereo Speakers: Clear sound with adjustable volume, max sound level up to 98dB Compatibility: Connect and stream audio from external devices via Aux or Mic input Great for Kids: Fun for kids of all ages with cute animal sounds and easy-to-use controls