Function Protects memory when replacing car battery and prevents reset of settings such as car dashboard information, digital clock, stereo, memory seat, ABS, etc For 12V battery connection. Danger of power failure Replacing the car battery when there is no backup power can not only lose various memories of the car, but can also cause display anomalies. In addition, the restoration may require readjustment at the dealership. With this tool, you don't have to worry about it. Sound Alarm The new version of Memory Keeper has a buzzer that alerts you when the backup power is insufficient. The memory saver works inside the cabin and battery replacement work should be done in the front of the car. Therefore, if the backup power is insufficient, the LED indicator of the old version will be difficult to detect, and the buzzer of the new version will alert you. Quality This tool is made in a new PVC material, environmentally friendly material, non-toxic and tasteless. High quality can be guaranteed and longer service life can be ensured. Adopting thick alligator clip, you can strengthen the clamping force, avoid falling off, and focus on your work.