Cool appearance light has wind energy sensor, which is eco-friendly. The non-marking adhesive installation does not hurt the car and the sticking is firm and not easy to fall off. It is made of good quality plastic material, durable to use. The length of this product is 12cm, the width is 4cm and the height is 1.8cm. It can be installed at a suitable angle by 180 rotation. It is suitable compatible most cars. The product is a wind-driven motor to generate electricity, no wiring is required. Item Name: Daytime Running Light Material: Plastic Applicable Models: compatible Most Cars Features: Eco-friendly, Wind-driven, Super Bright Size Details: Size: 12cm x 4cm x 1.8cm/4.72" x 1.57" x 0.71" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Installation Tips: 1. Please wipe the installation location clean becompatiblee installation to ensure it is dry and clean. 2. It is recommended to use a hair dryer to heat the double-sided tape to improve the adhesion. 3. Press lightly during installation to fit effectively. 4. Do not touch water or drive within 24 hours after installation, otherwise it will fall off easily. Package Includes: 2 x Daytime Running Light