The seat heating is fast warm, in the long run too hot, what not disturbing, because you can unplug the machine after a few minutes. Quickly heat is the biggest advantage, since the vehicle heating takes a long time until the car is warm and you will be getting warmed up itself. The operation of the seat heating is indicated on the connector with a luminous LED. Must be that the plug is pulled to turn off because there is no flag is present, is not a particular disadvantage: Other manufacturers require that the plug is pulled after use to minimize the risk of fire to the seats. So why not pull off the same if it's a warm enough? For the low price a good product. Criticism: At first smell the seats, especially in the operation, according to chemistry, which later subsides with time. In addition, at a Heated seats were missing two hooks for hanging, allowing two cable ties were used as a last resort.