1min Fast Heating: This heated eye mask features a carbon fiber heating sheet for rapid warming within 1 minute, helping promote relaxation and support sleep. 3 Temperature Modes: Designed with three adjustable heat settings to suit personal comfort needs. Fatigue Relief: The gentle warmth helps promote blood circulation around the eyes, which may assist in relieving symptoms of dry eyes, eye strain, puffiness, and discomfort associated with fatigue. USB Powered: Compatible with standard USB power sources such as laptops, power banks, and car chargers. USB adapter not included. Timing Function: Equipped with auto-shutoff timer settings for safe and worry-free use. Item Type: Heated Eye Mask Material: Polyester, Carbon Fiber Heating Sheet Package Includes: 1 x Heated Eye Mask, 1 x USB Cable