Used for about a year. It worked without any problems. TK-KCSH-S12 Product Material: Airflow area fabric: 100% polyester, Fabric other than airflow area: Linen (flax) Color: Black Seat Weight: 500g Power Source: Cigarette lighter socket Cigarette lighter power USB terminals: Top 5V1A output, Bottom 5V2.4A output Power Consumption (Fan): 12V1A Approximately 12W Power Consumption (Heater): 12V2.5A Approximately 30W Air Volume: 46.5 cubic meters/h Rotation Speed (rpm): High 2600, Medium 2460, Low 2300 Noise: 52.2db Heater Surface Temperature: High temperature approximately 48℃, Medium temperature approximately 42℃, Low temperature approximately 35℃ Automatic Power-Off Function: Fan function 2 hours, Heater function 1 hour Power Cable Length: Approximately 1m