This soft silicone keyboard is portable and can be rolled up for storage. It is deal for travel, school or any work environment. With USB port connection, it is plug and play, which is convenient to use. Item Name: Wired Keyboard Material: Silicone Type: Wired Interface Type: USB Working Temperature: -40- 80 Degree Celsius Keystrength: 80-120g Service Life: More than 10 Million Times Features: Wired, Portable, Plug and Play Size: 35cm x 13.4cm x 1cm/13.78" x 5.28" x 0.39" (Approx.) Notes: Due to the light and screen setting difference, the item& 39;s color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Wired Keyboard