Lingdu BL950 Tachograph Ultra High-Definition Night Vision Is Not Connected To The Battery Monitor 30 Days Parking
They asked more specific about the product was unmatched with the description, I send it  to Lei Bernie that are<br /> 1. According to the product description on Amazon.com, the product can work with no battery for 30 days while parking, but the product manual says only about 3 minutes after the power is off, which is a big difference; in addition, there is no description about its usage at night as well, and it simply looks like a different product.<br /><br />2. In regard to the SD card, no matter it need