This is a reflective film for head up display. It makes the display more clear. If you need the head up display on your smart phone to reflect better on the front windshield, then this film will helps a lot. Features: Clear and transparent. 0.3mm thickness. Static electricity film, no mucilage, non-corrosive. Clean and easy to remove, leaves no adhesive residue. Works for head up display, especially for the head up display on the smart phone. Specifications: Color: Transparent Material: PET Quantity: 1pcs Item Length: Approx. 15cm / 5.9in Item Width: Approx. 12.5cm / 4.9in Item Weight: Approx. 8g / 0.3oz Package Size: Approx. 17 * 14cm / 6.7 * 5.5in (L * W) Package Weight: Approx. 8g / 0.3oz Package List: 1 * head up display Film