Two power options keep this 49-key keyboard usable wherever a child ends up: 3 AA batteries for the back seat of a car, or the supplied USB cable into an adapter rated 5V 1A at home. On the panel are 8 tones, 8 rhythms and 10 demos, plus one-key one-note mode, record and playback, volume, transfer and tempo controls, so a beginner has room to experiment before formal lessons start. A wired microphone plugs in for singing along, which usually keeps a practice session running longer. Built from ABS with a clean white finish, the whole keyboard measures 21 by 7.5 by 2 inches and weighs 1.7 pounds, light enough for a 3-year-old to carry from room to room.