EWI SOLO Included: Dedicated power adapter, USB cable, quick start guide, neck strap (unused) An AKAI wind synthesizer. The EWI SOLO, equipped with 200 sounds including saxophone and trumpet, has a built-in speaker and rechargeable battery, allowing you to play it on its own. I bought it 5 years ago, but I only used it a few times a year. The charging capacity of the built-in battery seems to be fine, judging from the LED display as shown in the photo. The mouthpiece has been disinfected. I will ship it using this box (photo) as is. When I purchased it from Ikebe Gakki, it was also delivered in this box without any outer packaging.