This trombone is built for beginners and for musicians who need a portable instrument with clear, penetrating sound for practice and performance. It combines userfriendly design with construction choices that emphasize strong timbre, projection, and reliable drainage. Key benefits Easy to play and carry: designed to simplify learning and to be convenient for transport between practice, rehearsal, and gigs. Clear, penetrating tone: produces a clean sound that projects well in ensembles and recordings. Powerful, expressive voice: white copper transposing tube delivers a strong timbre with a low, powerful sound and a rich Dunhuang feeling. Durable drainage system: spring type drain valve with hardness is not easy to fade and features a waterproof design for more thorough drainage and longer service life. Improved projection and tone: enlarged bell mouth increases the speaker area so the sound is louder and the tonal quality is enhanced. Features and attributes Function: suitable for band practice, live performance recording, classroom use, and small to medium venues. Material: white copper transposing tube for stronger timbre and fuller low end. Drain system: spring type drain valve designed for durability and efficient moisture removal. Acoustic design: enlarged bell mouth for greater sound projection and improved tonal balance. Portability: compact design that is convenient to carry between rehearsals and performances. Typical use scenarios School and community band practice: easy to handle for beginners while providing a clear, projecting tone that blends well with ensembles. Live performance and recording: clean, penetrating sound and stronger projection make it well suited for onstage use and live recording sessions. Small gigs and rehearsals: the louder output and improved tone help the instrument stand out in group settings without sacrificing expressiveness. This trombone offers a practical balance of playability, sound quality, and durability for players and performing musicians who need a reliable, expressive instrument.