Thank you for viewing. I have been using this for about a year. I don't play PC games, so I think there is little deterioration. I have confirmed that all keys can be used. I will send everything in the photos. (All accessories should be included) Please contact me if you have any other questions. Feel free to ask for a price reduction. I will consider it on a whim. Wireless keyboard with red mechanical switches and media control buttons. Equipped with the proprietary wireless technology "LIGHTSPEED," this is a tenkeyless high-end keyboard. One adapter can connect a compatible mouse and keyboard. Equipped with "GX key switches" that enable professional-grade high-speed typing. It is also highly durable, supporting over 70 million keystrokes. It uses PBT keycaps that are highly abrasion-resistant and improve light transmission. Smooth and solid key feel, and the keycap printing durability is also improved. - Brand: logicool Logitech - Switch Type: Mechanical - Switch Color: Red - Function Buttons: Media Control Buttons - Connection Method: Wireless - Size: Full Size Thank you for viewing. Connection Type... Wired/Wireless (Bluetooth) Key Switch... Mechanical Keyboard Layout... Japanese Series Name... PRO Other... Gaming Keyboard Model Name... PRO X TKL Keyboard/Size... Tenkeyless Keyboard/Type... Mechanical Features... Dedicated Media Control Switch... Linear Connection Method... Bluetooth + Logi Bolt USB Receiver Features... Rechargeable