Portable, Durable and Comfortable  ☀ Ultra slim and compact, this keyboard is perfect for travel, school, or any working environment. Quiet keystroke is a good match for library use.  ☀ Convenient for taking along after rolled up. Easy for operation and storage. This multimedia flexible keyboard makes your web surfing a breeze.  ☀ Unique design and production process provide amazing usage experience, keys are quiet, stable, soft, and responsive, can be used in silent environment without disturbing other people.  ☀ Plug and play, no driver required, compatible with all computer, notebook, laptop (Windows XP, 2000, Vista, Mac OS) . Meanwhile support OTG function for Android phones. To protect the keyboard and extend service life, pls use the product properly and follow the tips below: ✍ This product cannot be contacted with oil or organic impregnate like actone. ✍ It cannot be pressed when it was rolled. ✍ Do not place heavy objects on in a long time. ✍ Do not pull or twist it, suggest rolling up the keyboard instead of folding hard when in need. Specification: ☀ Power Supply: USB Interface ☀ Size: 15.8 x 4.9 inches ☀ USB wire length: 55 inches  ☀ Keyboard Button: 103 Keys Package Content: 1 x Roll-up Silicone Keyboard Note: ☞ As the keyboard is made of silicone, the silicone skin and circuit board inside the keyboard may stick together partially after long squeezing in transit, which may affect sensitivity of some keys. If you find some keys not very sensitive or do not work, pls pick up the keyboard, hold the indicator board and shake the whole keyboard for a moment (just keep it in vertical). It is to separate the silicone skin from the circuit board inside the unit and helps to restore its elasticity.