Gently used, 61 portable mini keys that can be used on bluetooth (powered by 2 AA batteries), or wired via USB-B. I’m at least the second owner of it and haven’t had any issues with it, though I did feel like the B in one of the middle octaves felt ever so slightly harder to trigger, but hardly an issue and I stopped noticing it, honestly speaking.
Doesn't include USB cable as I've nearly exclusively used it via bluetooth
MSRP is around 280