Built-in smart chip, automatic switching of 12V/24V voltage The velvet fabric is uniformly heated in all directions locks the temperature, and quickly heats The base fabric is added with anti-slip silicone, which fits the seat and is not easy to shift The cigarette lighter plug has a built-in fuse, solid heat dissipation contact points, multiple protections Even heating in all directions, 3 levels adjustable temperature control, safe and fast heating Specification: Material: velvet fabric + silicone non-slip base fabric Temperature adjustment button: Level 1: The heating plate temperature: about 45 Celsius Degree Level 2: The heating plate temperature: about 55 Celsius Degree Level 3: The heating plate temperature: about 65 Celsius Degree. At this time, the body temperature: 45 Celsius Degree-48 Celsius Degree Power switch button: The seat cushion will automatically power off after 50 minutes of continuous heating. If you need to continue heating, you must manually turn it on again