This portable keyboard piano combines durable, environmentally friendly materials and precise workmanship with a smooth edge design for comfortable handling. It is designed for beginners, students, adults, and professionals who need a flexible, multi functional instrument for practice, teaching, composing, and performance. Key benefits Versatile 88 key layout that adapts to your needs: use the folded main unit as a standalone 44 key piano, or connect the auxiliary unit to restore a full 88 key range. The foldable design improves conversion efficiency between compact and full setups. Wide tonal and rhythmic palette: 128 timbres and 128 rhythms provide diverse sound options for practice, arrangement, and performance. Ready to learn and demonstrate: 20 built in demo songs help with study and reference. Easy control and expression: dedicated functions include volume adjust, start and stop, timbre select, rhythm select, demo song, keyboard light Converter, speed, transpose, chord, sustain, vibrato, and keyboard drums to shape tone and timing. Features Number of keys: 88 keys total. Main unit folds to function as a 44 key piano on its own; connect the auxiliary unit to complete the 88 key range. Multi functional controls: volume, start and stop, timbre, rhythm, demo song, keyboard light Converter, speed, transpose, chord, sustain, vibrato, and keyboard drums. Construction: environmentally friendly, durable materials with fine workmanship and smooth edge design for comfortable use and handling. Performance: broad sound selection and rhythm options for practicing different styles, composing, and arranging. Practical use scenarios Home practice and learning: use demo songs and transpose or speed controls to practice pieces at a comfortable tempo, then reconnect the auxiliary unit for full range practice. Classroom or lesson use: the portable main unit serves as a compact teaching keyboard; rhythm and chord functions support accompaniment during lessons. Small studio or live setup: expand to the full 88 key configuration for composing or performing pieces that require the full keyboard range while keeping easy control over timbre and effects. This keyboard piano offers flexible functionality, a foldable full size design, and a broad set of sound and control options to meet varied musical needs without sacrificing build quality or handling.