Why to worth buyingGet rid of the battery. Upgrade Rechargeable Wireless Car Door Courtesy Welcome Lights. It can be used for up to 50 days with once charge.The holder and the lamp can be separated. Convenient to charge, dont need to disassemble. Safe and environmentally friendly and convenient. Why you need itThe upgraded car projection lamp uses intelligent infrared sensor, which can turn the light without installing a magnet in the door. Both automatically turn when the distance from the obstacle is 1.5- 4 inch, and automatically to light up when you open the door, make your car to luxury and unique, also can be used as a car warning light to prevent accidents in the dark. How to InstallSo easy!No drilling, no wiring. Just stick the light lamp on the door panel. 3M sticker was super strong and durable. Not easy to fall down, Only 1 minute. Best Cool Gift!When the door is opened, a super bright light source and clear logo is illuminated to the ground,super cool~They Image is crisp and the light is bright. Make your car the most shining and coolest car on the way. Show the lights in the dark! trust me, thats Amazing! Automatically shuts when the distance from the obstacle is 1.5-4 inches, automatically lights up when the door is opened, making your car luxurious and unique, and can also be used as a car warning light to prevent accidents in the dark. USB charging, full charge lasts about 50 days. Carbon fiber shell makes the product more classy