Category: Hair Care ToolsOperating Voltage: 3.7V 500maFunction: Maintain Hair Follicles, Care For Hair Loss, And Prevent Hair LossGear: 3rd GearColour: BlackApplicable Objects: AdultsSpecifications:1. Can Be Adjusted According To Your Head Size To Provide You With Maximum Comfort.2. The Dense Hair Cap Is Made Of High-quality Materials And Is Safe To Use.3. Double Layer Temperature Balancing And High Quality Durable Lining.4. Waterproof, Thermal Insulation, Easy To Clean.5. The Three-band Hair Care Cap Uses The Principle Of Band Light Heating To Balance Hair Oil, Promote The Hair To Quickly Absorb Conditioner And Other Nutrients, Improve Care, And Reduce Hair Frizz And Split Ends.Package Included:1*(1 Hair Growth Cap)