Working Principle:Ultrasound Wave,vibration massageFunction:Skin Rejuvenation,Skin Mouisture,Skin Tightening,Anti Wrinkle,Whitening,LiftingPower Source:DRY BATTERY,ElectricMaterial:PlasticBrand Name:HEONYIRRYOrigin:Mainland ChinaUse it for 5-10minutes every morning and evening When using this product, it can be together with some essence, face cream, neck cream, and the effect is better. Keep using it for a while, you will find its magical power Characteristics: Sonic High Frequency Vibration]: 7000 times / minute, activate your skin tone, quickly activate cells, and increase the elasticity of the neck skin. [Special Massage Treatment]: Non-surgical neck protector after massage, at different wavelengths, has a significant effect on improving fine lines, wrinkles, sagging, melanin and scars, as well as lifting neck and firming. [Curved]: Beautiful appearance, like dolphin tail, matches the neck and face lines perfectly. Also suitable for shoulders and other parts of the body. Helps relieve lymphedema.