Thank you for viewing. Product features are as follows: * Supports 3 connection methods → USB wired / Bluetooth / 2.4GHz wireless (※Dongle missing, so not usable) * Features CHERRY MX RGB mechanical switches → Red switches * Equipped with Genius-Knob (side wheel) → Supports rotation, click, and double-click, allowing assignment of volume adjustment, RGB switching, etc. * RGB lighting equipped → 9 lighting modes for keys and sides, creating a vibrant gaming environment * Windows/Mac switchable 【Notes】 This product originally supports 3 connections: "USB wired / Bluetooth / 2.4GHz wireless," but the 2.4GHz wireless USB dongle is missing, so it will connect via wired and Bluetooth. For other details, please refer to the crowdfunding site where it was purchased: https://camp-fire.jp/projects/85153/view Currently, it is in wired mode, so please change the settings to the mode you want to use from there.