Features: brand new and high quality After use, put the gel back in the storage box - put it in shade after use - avoid exposure to sunlight directly. Make sure your hands are dry and clean, take a piece of the cleaning gel, knead it into a ball, press the cleaning gel slowly into the keyboard, car vent and rugged surface and then pull out, the dust would be carried away with the cleaning gel. The cleaning gel, simple and convenient cleaning kits for PC/laptop keyboard and other rugged surface, such as the car vent , camera , printer , telephone , calculator, Instrument, speaker, air conditioner, TV and other appliances. The keyboard cleaning gel could be used repeatedly till the color turn to dark, or it become sticky, then you have to replace the gel with a new one. This universal dust cleaner is made of biodegradable gel, no sticky to hands, smells sweet with lemon fragrance, no stimulation to skin. Specifications: Weight:80g Material: Silica Gel Size:18X12cm/7.08X4.73in Dust Dirt Cleaner: Dirt Cleaner/Car cleaning gel Color: Green /Yellow /Blue/ Red Package Includes: 1 Piece Cleaning Gel note: Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand. Please allow 0-2mm error due to manual measurment. After use, pls put the gel back in storage box - put it in shade after use - avoid exposure to sunlight directly.