This neck firming device can help promote blood circulation, stimulate the neck acupuncture points, clear the meridians, improve circulation and promote metabolism This device is equipped with 3 vibration intensities, 45+ heating, it is also equipped with a three-color light massage with different effects to promote blood circulation and the accumulation of long-term waste discharge, Blue Light: The coldest light, can promote the synthesis of protein and collagen, activate the skin, tighten the loose skin and shrink the pores, which is good for oily skin and sensitive skin. Green Light: Can improve the oxygen alternate use function of the cell, promote the skin surface micro-circulation and dredge the lymphatic & edema. Red Light: Can increase cell vitality, accelerate blood circulation