Sixty-one light-up keys are what make this a teaching instrument rather than just a keyboard. Paired with three teaching modes, the lit keys show a learner exactly where to put a finger next, so progress happens without an instructor standing over the bench. A dual keyboard function splits the 36.5 in by 12 in by 3.5 in board so two players can play simultaneously, which turns practice into a lesson between a parent and a child or two friends. The set arrives complete. A keyboard stand adjusts to 22.5 in, 25 in, or 27 in, and the 16 in by 12 in by 17 in stool is rated to a 330 lb capacity with soft padding that reduces fatigue during long periods of practice, plus anti-slip foot pads that add stability and protect the floor. An 18 in by 8.5 in music stand holds sheet music. The sound engine runs 600 timbres, 400 rhythms, 50 demos, and 61 percussions through two high-quality speakers, with a clear LCD display showing what is selected. A headphone and a microphone both ship in the box, so the same instrument covers silent solo practice and ensemble play, and a USB jack, audio input, microphone input, and headphone output cover the connections. Power comes from the adapter, taking 100-240V at 50 to 60 Hz and delivering 12V at 0.5A, or from batteries, not included. Premium PS, ABS, metal, and leather materials keep the 18 lb structure stable for long-term use, from beginners to pros. Specification: Color: White + Black; Material: PS ABS Metal Leather; Keyboard Size: 36.5" x 12" x 3.5"(L x W x H); Stool Size: 16" x 12" x 17"(L x W x H); Keyboard Stand Height: 22.5"/25"/27"; Music Stand Size: 18" x 8.5"(L x W); Stool Weight Capacity: 330 lbs; Adapter Input: 100-240V 50/60HZ Max 200mA; Adapter Output: 12V 0.5A; Net Weight: 18 lbs; Package Includes: 1 x 61-Key Electronic Keyboard 1 x Keyboard Stand 1 x Stool 1 x Music Stand 1 x Microphone 1 x Headphone 1 x Power Adaptor 1 x User Manual