1.Novelty design, fit for different user. 2.Apropos design, easy to operate. 3.Four high frequency massage kneed head. five optional massage manipulation, three levels for strength and rhythm adjusting. 4.Infrared warm up function 5.Slide fastener outer wrap design, can be use in all seasons. 6.Inside PU material, fashion out cover. 7.Help release foot soreness. 8.Massage and heating work separately can got better effect. 9.Use standard power adaptor, ensure safety. Specifications: Voltage: DC 12V Rated Power: 15W