This is a silica gel wireless keyboard. The key surface can be washed and the keyboard can be rolled for storage. Light weight and mini size allow you pack it to anywhere. It is a perfect item for traveler. Features:Ergonomics design， comfortable operating by silica gel keys.The key surface can be washed.The keyboard can be rolled for storage.Low noise， avoiding disturbing other people.Strong anti-jamming capability， enjoy 10.0m / 32.8ft long-range wireless control.Plug and play， no pairing requirement， convenient for use. Specifications:Support system: For Windows 98 / Me / 2000 / XP / Vista， for Apple operating systemFrequency: 2.4GHzOperating temperature: -20 to 55℃Humidity: 20%-50%Effective distance: 10.0m / 32.8ftBattery: 2 * AAA battery (not included)Color: Black and grayMaterial: Silica gelItem size: 40.0 * 12.5 * 1.5cm / 15.7 * 4.9 * 0.6in (L * W * H)Item weight: 181.0g * 6.4ozPackage size: 13.1 * 7.8cm / 5.2 * 3.1in (D * H)Package weight: 204.0g / 7.2oz Note:The keyboard can not be contacted with sharp objects， oil， chemicals and fire.When folded， the product can not be squeezed.Please do not put heavy objects on the keyboard.Please do not stretch or distort the keyboard too hard. Package list:1 * Wireless keyboard1 * USB receiver