The 650nm Red Light Infrared Hair Therapy Hair Growth Cap is a hair care device designed to help maintain hair follicles and support healthy hair. It operates at 3.7V 500ma and features three adjustable settings for personalized use. This cap is intended for adult use and comes in a sleek black design. The cap is adjustable to fit various head sizes, ensuring comfort during use. It is constructed with high-quality materials and features a dense, double-layered design for improved thermal balance and durability. The interior lining is designed for comfort and longevity. The cap is waterproof and thermally insulated, allowing for easy cleaning. This hair growth cap utilizes red light therapy technology with 650nm wavelength light. This feature is designed to support the absorption of hair nutrients, help maintain scalp health, and contribute to overall hair condition. It may also help reduce frizz and split ends, promoting smoother, more manageable hair. The package includes one hair growth cap, providing everything needed to begin use. Key Features: - Designed to support hair follicle health - Adjustable fit for comfort - Durable, high-quality construction - Waterproof and easy to clean - 650nm red light to support nutrient absorption - Helps reduce frizz and split ends - Three adjustable settings - Suitable for adults Please review product dimensions before purchase to ensure suitability. For any questions regarding the product, feel free to reach out through Amazon messaging. Thank you for considering this product for your hair care routine.