Features:1. Neck beauty device that can be used on the neck to effectively lift and firm the skin, reduce facial wrinkles, fine lines and neck lines, and is designed to give you a swan neck.2. 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.3. Three modes, three intensity adjustments, accelerate blood circulation, promote collagen production, dredge meridians, shrink pores, and rejuvenate the skin.4. Dolphin bionic design, 160 around the neck, fully fit the neck curve, and can deeply touch the neck skin.5.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:Color: WhiteCharging voltage: DC5VCharging current: 0.5ABattery parameters: 3.7V/500mAhCharging time: 2 hoursProduct size: 160*88*36mmWorking time: 10 minutes no operation, automatic shutdownRated input power: 2.5WRated output voltage: 2.3-2.8VRated input voltage: 5VWorking voltage: 2.5V~4.2VWorking current: 11mA~280mACharging voltage: 5VCharging current: 500mAFrequency "20KHzPacking List:1* Neck beauty deviceNote:1. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you2. Please allow 1-3mm measuring deviation due to manual measurement.