Thank you for looking. This is Seiko's "DM90" multi-function compact metronome. Product condition Usage frequency: After purchase, it was stored for a long time with almost no use. It is in a very clean condition, close to "almost unused". Operation: Confirmed operation for this listing. Button operation, sound, and LCD display (including temperature and humidity) are all functioning without issue. Exterior: The main unit is in beautiful condition, but due to long-term storage, the outer box has some scuffs and corner damage. Please check the photos. Main functions In addition to the metronome function, the following convenient functions are included. Metronome Clock Timer Stopwatch Alarm Tuning tone (reference tone) Thermometer Humidity meter (ideal for managing instrument condition!) Accessories Metronome body Instruction manual (English/other languages) Genuine strap Outer box Immediate purchase OK! How about using it for instrument practice, such as for wind instruments, piano, or guitar? Thank you in advance. Keywords (search keywords) #SEIKO #Seiko #Metronome #DM90 #InstrumentPractice #MusicSupplies #ConcertBand #Piano #Guitar #Violin #Thermometer #Hygrometer #ConditionManagement #Tuner #Stopwatch #BeautifulCondition