Description from the website I purchased it from: Unikome heating blanket with 16.7-feet extra-long detachable power cord for more flexible, blanket use complies with UL964 standards and uses PTC/NTC heating wire to offer a protection mechanism while keeping warm. And the quality of the heated blanket throw is certified by ETL&FCC Certification.Meanwhile, Our Blankets is The Warm and Best Christmas Gift for All Winter - The flannel blanket's soft and safe, When you use it, make you all body feel relax and warm, You can use it in the bedroom, living room, and office as you like. It's also perfect as a Valentine's Day gift, Thanksgiving Day gift, Christmas gift, New Year's Day gift!