I purchased this around January of last year for finger exercise practice and used it for about a year. The mouthpiece is new (I don't plan to include the one I was using). Currently, there are no operational issues. I handled it with care, but there may be some minor scratches, so please be aware of this. This is a digital wind instrument that allows you to practice fingering even in places or times where you can't play a real instrument, as it has volume control and a headphone jack. You can customize sound creation and performance settings on your smartphone using the "Aerophone Editor" app. You can also play ensemble performances while listening to your favorite songs. 《The items in the photos are all that are included. Please understand.》 It currently has 4 AA alkaline batteries installed. They don't have much capacity, so I've included them for confirmation. If you have any questions, I will answer them to the best of my ability, so feel free to message me. (I am working, so my replies may be delayed.) 〇About Shipping I have disposed of the product box, so I will ship it with cushioning material. ■Aerophone ■Digital Wind Instrument ■Wind Synthesizer ■Sound Quality: PCM sound source ■Tone: Preset 11 (50 more tones available via the app) Includes 4 types of saxophone, flute, clarinet, muted trumpet, violin, synth sounds, and percussion. ■Operation Keys: Based on saxophone ■With F# key ■Sensors: Breath sensor, bite sensor ■Octave Shift: ±1 ■Thumb Controller: Button type ■Bluetooth equipped: MIDI / Audio ■Power: USB power supply possible ■External Dimensions: Length 454mm, Width 128mm, Thickness 78mm ■Weight: 695g (including batteries) ■Includes a carrying case #DigitalSax #Saxophone