Natural wood body combined with environmentally friendly resin gives this thumb piano a visually striking finish and a solid feel. Thickened metal shrapnel are engraved with digital phonetic symbols for clear note identification. The key arc has been refined through repeated optimization and the strings feel smooth for comfortable playing. A Ushaped sound chamber refracts and transmits sound for higher resonance frequency, longer sustain, and a thicker, more stable tone. Key benefits Easy to learn and play: musical notes are engraved on the keys so you can produce music right away using just your two thumbs or the included tuning hammer. Clear tuning and control: thickened metal shrapnel with digital phonetic symbols helps you identify notes quickly and tune accurately. Improved playability: an optimized key arc and smooth strings reduce finger fatigue and make scales and melodies easier to execute. Richer sound and sustain: Ushaped contour increases resonance frequency, extends sustain, and delivers a fuller, more stable tone. Durable and attractive materials: natural logs combined with environmentally friendly resin create a durable instrument with a dazzling appearance. Features and function Material: natural logs and environmentally friendly resin. Keys: thickened metal shrapnel engraved with digital phonetic symbols. Key design: arc of the keys optimized through multiple adjustments for smooth touch and consistent response. Sound chamber: Ushaped design that refracts and transmits sound to enhance resonance and sustain. Playing method: playable with two thumbs or with the included tuning hammer for percussive effects and tuning adjustments. What is included thumb piano x 1 EVA piano case x 1 English manual x 1 tuning hammer x 1 tuning key sticker x 1 cleaning cloth x 1 Practical use scenarios Home practice and learning: ideal for beginners and hobbyists who want a simple, clear way to learn melodies and basic music theory. Live acoustic performance and small gatherings: compact design and fuller tone make it suitable for intimate performances and accompaniment. Recording and creative work: the stable sustain and rich timbre make it useful for adding melodic layers or unique textures in solo recordings. This thumb piano combines userfriendly design, clear tuning markings, and a resonant Ushaped body to make playing and maintaining the instrument straightforward while delivering a warm, stable sound.