[Convenient cordless heated eye mask] Say goodbye to the hassle of wires that come with traditional heated eye masks. This cordless eye mask offers a more convenient and effortless experience. You can use it in various settings, whether at home, in the office, or on a train. It's easy to take out whenever you need to soothe your eyes and alleviate fatigue. ?[Well designed/More Lightweight/comfortable]: The E-warmer eye mask is crafted from real silk, featuring soft silk fabric on both the front and back, making it comfortable to wear without any heaviness. The sponge inside the mask has a grooved structure that helps relieve pressure on your eyeballs. Its design conforms to the shape of your nose bridge, ensuring that high noses are not pressed down by the mask. ?[Higher designed temperature] specifically targets dry eyes. The E-warmer eye mask incorporates a carbon fiber heating element that senses temperature in just one second, reaching a maximum of 150F, significantly improving the effectiveness of hot compresses. ?[Clear battery indicators system] Powered by a lithium battery, the E-warmer eye mask features a straightforward battery indicator system that allows users to easily check the battery status, showing how much longer the mask can be used. The E-warmer has clear four-level battery indicators that display the remaining power. Additionally, it shows how much battery has been charged while recharging, making it user-friendly. ?[more times usage per charge] This mask boasts the highest capacity and longest usage time compared to other brands. The E-warmer eye mask is equipped with a 1500MAH polymer lithium battery. Once fully charged, it can be used 5 to 10 times at different temperatures. It's incredibly convenient! If you use it twice daily, you only need to charge it every 3 to 5 days, while most other eye masks require daily charging. ?[3 Levels-Adjustable Temperature and 15 safe auto off timer] This cordless heated eye mask features 3 adjustable temperature levels and a 15-minute auto-off timer.