Model Name: Aeroband Guitar Features: Next-generation digital guitar Color: Black AeroBand guitar, stringless, acoustic-electric travel guitar, portable silent guitar, smart guitar for beginners, adults, and teenagers with removable fretboard, perfect for gifts. No string replacement or tuning required. Built-in speaker, with slots for 3.5mm and 6.5mm jacks to connect headphones or an additional amplifier. *Removable. Everything shown in the 3rd and 4th photos is included. I do not have expert knowledge of this product. I was able to play songs (chords) just like a regular guitar. I have another one of the same model, so I am selling this one, which has been used less frequently. Purchase price: ¥134,875 (tax included), purchased in September.