This is the handheld device that uses vibration along with hot and cold therapy to maximize the absorption of skin creams and lotions as well as provide relief for tense muscles. Its three heat settings (95° F, 104° F, 113° F) help open pores and increase blood circulation while its three cold settings (59° F, 50° F, 41° F) help tighten skin to lock in moisture or reduce inflammation and swelling. Its bulbous silicone head vibrates at three speeds (4,500, 5,500, and 8,000 rpm) that penetrate deep into muscles and relieve tightness and knots. Automatically shuts off after 10 minutes. Rechargeable battery provides up to six hours of use after a six-hour charge via included USB cable. 10 1/2" L x 2 1/4" W x 1 3/4" D. (10 oz.)