This is a new, unopened product. [MIDI Connection] Digital wind instrument with MIDI function, can be connected to software sound sources, performance-grade sound wireless expansion, compatible with Windows, iPhone, Android, and other systems. [Long Battery Life] This electronic wind instrument has a built-in 800mAh high-capacity lithium battery and can play for 4 hours on a full charge. Simple design, portable, suitable for students, teenagers, teachers, adults, seniors, etc. [HiFi Speaker] MIDI wind instrument with a built-in 2W HiFi speaker, allowing you to play directly without connecting to a speaker. It consists of a removable flat nozzle, closer to the shape of the human mouth, for improved comfort. [10 Tones] The mini digital wind instrument has 10 tone options, including alto and soprano saxophones, clarinet, flugelhorn, trumpet, suona, ocarina, flute, bamboo flute, and recorder, making it easy to switch and always meeting your needs. [Multi-function Keys] Touch-sensitive keys, 3 types of breath sensitivity, 12 accompaniment tunings up and down, can be connected to headphones and speakers.