Features:High-quality materials: The car door door reminder equipped with smart sensors is made of high-quality materials, which is wear-resistant and durable, not easy to break, and can be used for a long time.Easy to install: The base of this car door door reminder is designed with seamless double-sided tape, which can be easily installed and removed.Intelligent high-definition voice prompts: When it sense that you are about to open the door, it will sound a prompt sound and light-up the breathing colorful lights to remind you to pay attention to the vehicles behind.Rechargeable design: This low-power car door door reminder has a reserved USB charging port, large-capacity battery, low power and long standby time.Stable and non-falling: The base is fixed with special double-sided tape for cars and has its own base design, making it easy to remove and charge.Notice:1.Actual color may be slightly different from the image due to different light effect2.Please allow 1-3cm deviation due to manual measurementDescription:Material: ABSSize: 5.9*2.7*1cmInput voltage: 5VLight response time: 2 minutesApplicable models: Common to all modelsAirs separation distance: about 5cmNote: Do not block the infrared device during installation. Make sure there is no obstruction within 5cm of the straight line distance from the infrared device to avoid infrared sensor failure.