Features: Physical treatment and ultrasonic vibration, no side effect, safe and assured to use. Using hot and cold alternately, can activate cells thoroughly, improve overall skin texture, skin tightening, facial lifting, pore shrinking, and eliminating eye bags and dark circles. Working time and temperature can be displayed on the screen separately according to the modes you choose. Easy to operate and convenient for daily skin care. Thermal Therapy(Red Light) - Relax muscle, relieve painless; Stimulate blood circulation; Enhance metabolism, remove eye bags and dark circles. Cold Therapy(Blue Light) - Contract pores and firm skin; Detoxify and remove spots; Calm skin and reduce swelling. Ventilation vent design helps the heat distribution and avoid burning. Specification: Item Type: Hot & Cold Beauty Machine Material: ABS Temperature: Hot Therapy: 30-55 Cold Therapy: 5-25 Cooling: 5, 15, 20, 25 Heating: 30, 35, 40, 45, 50, 55 Input Voltage: DC 100-240V 50-60Hz AC 5V/2.5A Optional Power Plug: US Plug, EU Plug Package list: 1 x Main Machine 1 x Adapter 1 x Manual Thermal Therapy: 1. Relax your muscles and relieve pain and soreness. 2. Stimulate blood circulation, increase blood oxygen content, and promote the rapid absorption of nutrients. 3. Increase the rate of skin metabolism, eliminate waste toxins, and have a certain effect on the elimination of eye bags and dark circles. Cold Therapy: 1. Shrinks blood vessels and improves pores. 2. Firms skin, maintains elasticity, smoothes wrinkles and crow's feet 3. Contracts blood vessels, effectively reduces varicose veins, and diminishes spots. 4. Reduces metabolic rate, inhibits slowing cell activity, calms and soothes, and reduces swelling. 5. Especially good for allergic skin.