The information about the product is provided by the seller. Notwithstanding any of this information, the product is not intended for diagnosis, cure, mitigation, treatment or prevention of any disease, is not a drug or a medical device, and should not be used for any medical purposes. Please consult a medical specialist. Neck beauty device that can be used on both the neck and face to effectively lift and firm the skin, reduce facial wrinkles, fine lines, and necklines, and is designed to give you a swan neck. Multi-effect skin care: color light rejuvenation + sonic vibration + deep cleaning + nourishing introduction + positive and negative ions + 45 constant temperature hot compress to make your skin smooth and firm. Four modes, three intensity adjustments, accelerate blood circulation, promote collagen production, dredge meridians, shrink pores, and rejuvenate the skin. Dolphin bionic design, 160 around the neck, fully fits the neck curve, and can deeply touch the neck skin. Positive and negative ions are efficiently introduced into nutrients to improve the absorption efficiency of nutrients by the skin. When used with neck cream and neck mask, the effect is doubled. Specifications: Material: ABS Rated voltage: 3.7V Rated current: 500MA Rated power: 2W Built-in battery capacity: 450mAh Power input: 5V/1A