Package: Includes 7pcs semi dimmer(50%-80%) black stickers, about 125mm/4.9inch wide, 220mm/8.6inch long, 0.1mm thick. Material: LED dimmer stickers are made of PET with high quality adhesive backing, stick firmly, easy to tear. Reusable, no dust left behind. Blackout Design: This dimmer sticker can dim most of the LED lights and any electronic products to help you quickly fall into a deep sleep. Easy to Use: Just tear it off and it will stick anywhere you want, it can be cut into various shapes and sizes, minimalist design does not destroy the original style of the appliance. Widely Used: This LED dimming film can be used to cover a variety of screens and LED indicators, such as alarm clocks, radios, car screens, DVDs, air conditioners, refrigerators, radios, cable boxes, monitors and so on.