Microcomputer-controlled hot carpet main unit, equivalent to 3 tatami mats (235 x 195cm) CWC-3001. Features include a 10-hour automatic shut-off timer, dust mite cleaning function, and separate heating for left and right sides. Includes a rug purchased this winter. The rug was used on top of the hot carpet for about 1-2 months. It's in clean condition with no noticeable stains. It has been washed. The hot carpet has been used for about 3 seasons. No pets or smokers. Operation confirmed.