Key counts range from small toy pianos with around 15 keys to popular beginner keyboards with 61 keys, and full‑size digital pianos with 88 keys.
Common learning features include dedicated teaching modes and play‑along tools such as follow‑along, one‑key and ensemble modes, one‑touch teaching, rhythm programming, record/playback functions, and multi‑stage learning modes for letters and spelling.
Recording features are common—many models include record/playback and detachable or retractable microphones. For connectivity, at least one full‑size digital piano lists USB‑MIDI and Bluetooth MIDI for pairing with apps or other devices.
Common items include detachable or retractable microphones and built‑in record/playback. Larger starter kits often add extras such as a stand, padded stool, headphones, carrying case, and a power adapter.
Power options include AC adapters (no batteries required), AA or AAA battery configurations (examples include 4 AA or 3 AAA), and some keyboards support dual power—battery or an included adapter.
Weights range from about 1 pound up to 56.88 pounds. Many toy keyboards weigh about 1–4 lb; several 61‑key beginner models fall in the single digits (for example ~8.4 lb) up to ~22 lb. A full‑size 88‑key digital piano is shown at 56.88 lb with dimensions 11.81 in (H) × 18.5 in (W) × 54.92 in (D).