Opened once for testing purposes. Offered at a lower price than Amazon. Brand: Logicool (Logitech) Compatible Devices: PC, TV, etc. Connectivity: USB, Wireless (2.4GHz) Keyboard Description: Membrane Features: Compact, Portable Color: Black Model Number: K400pBK Wireless keyboard with a large touchpad, no mouse required. Stylish ultra-thin design suitable for use in the living room, such as operating a PC connected to a TV. Ultra-thin design, and can be stored upright. Key Layout: 84-key Japanese layout, Key Structure/Design: Membrane, Key Pitch: 18.8mm, Key Stroke: 2.7mm