Built-in Rechargeable BatteryEquipped with a Type-C charging cable and a 1000mAh battery, our eye heating pad can be fully charged in just 1.5 hours, providing up to 4 sessions of 15 minutes each on a full charge. It supports multiple charging methods (USB port, PC USB port, power bank), making it easy to keep powered up and perfect for your travel needs.Portable & Optimal DurationTired of dealing with tangled wires and limited mobility? Our cordless heated eye mask is lightweight and portable. The 15-minute auto shut-off feature ensures that the heated eye mask provides maximum benefits without causing discomfort or overheating, making it perfect for use at home, during travel, or at work.Easy to CleanThe cover of this eye mask for dry eyes is detachable and washable, and it comes with an extra cover for easy replacement, ensuring cleanliness and hygiene.Three Temperature ModesOur heated eye mask offers three temperature settings (Low: 107.6F, Medium: 125.6F, High: 143.6F) to meet your needs. You can choose the appropriate temperature mode based on your requirements. The adjustable headband ensures a perfect fit, enhancing your relaxation experience.Fast and Even HeatingThis eye mask uses advanced metal fiber heating material, ensuring quick and even heating. It helps promote eye blood circulation, relieve eye discomfort, and improve sleep quality, especially for those facing overtime work, late-night activities, long-distance travel, or intense study sessions.