What you get: 1 piece of silk heated eye mask and 1 piece of USB cable. The soothing warmth helps promote relaxation for better sleep at home, provides comfort during breaks at the office, enhances travel comfort, and offers a spa-like experience in hotel stays. Warm note: the eye mask is compatible with a 5V2A power supply; otherwise, it may not function properly. Comfy material: the warm compress eye mask is made of simulated silk, soft, breathable, and skin-friendly. It features an integrated heating element designed to deliver a comfortable experience for the eyes. Equipped with an elastic and adjustable headband, it fits most head sizes. Adjustable heat and timer: this dry eye relief mask is easy to operate with two control buttons. Adjust the temperature between 36°C and 50°C and set the timer for 20, 30, 40, 50, or 60 minutes. With just two simple buttons, customize the settings for optimal comfort and relaxation. Warm note: start using the heated eye mask at a lower temperature and gradually increase as your eyes adapt. Easy to power: powered via USB connection, the mask can be used with any standard USB power source such as a laptop or portable charger (USB cable included; power bank or adapter not included). Conveniently use it from bed, couch, or any comfortable location. Wide application: suitable for individuals experiencing dry eyes, stye, pink eye, blepharitis, or MGD. A warm compress applied to the eyes helps relieve irritation, dryness, and redness. Heat therapy is known to support blood circulation and soothe discomfort around the eye area.