3 Light ColorsThis LED neck reading light has three light colors, namely white light-warm white light-natural light and the double-headed 4 LED lights can be controlled independently. Adjustable BrightnessIn any color temperature, the upgraded hanging neck lamp can be adjusted the light brightness by long pressing the switch. You can adjust to the most suitable brightness according to your needs. Hanging Neck Design & PracticalThe rechargeable LED neck reading light is designed to free your hands, which is very convenient for night reading, night running, repairing, etc. And it is light and portable, which is very suitable for indoor and outdoor use. Battery Power SupplyThe built-in battery can be recharged and reused; The red indicator light will light up when charging, and it will turn to green indicator light when fully charged. The low brightness can reach 160 hours after charging for 2.5 hours. Heartwarming ReminderIf there are any problems with the use or function of the product, or if the product is defective/damaged, please contact the seller first, we will do our best to solve the problem for you.