I just purchased this product on Mercari. The previous owner said they only used it once. The product website stated that the firmware needs to be updated to use the rotary knobs. However, I found the procedure for installing and loading the files from GitHub to be too difficult, so I am selling it. The box is not included. Only the cable and the main unit are included. -------------- Product Name: DOIO KB16 Key Layout: Keys: 16 / Knobs: 3 Switches: Gateron KS-3 Milky Yellow Pro / 50±15gf Number of Layers: 4 OLED: 0.91 inch Remap Tool: VIA Case: CNC Aluminum Connection: USB Type-C Size: 142.5 x 96.2 x 33mm Weight: Nominal: 320g / Actual: Approximately 344g