What you get: you will get 1 piece of silk heated eye masks and 1 piece of USB cables, the soothing warmth helps you go into a deep sleep at home, take a rest for eyes at the office, enjoy yourself on travel and have an eye spa in the hotel; Warm note: the eye mask is compatible with a 5V2A power supply, otherwise it might not work Comfy material: the steam warm compress is made of emulation silk, soft, breathable and skin-friendly, comes with heater band placed in heated eye mask, bring your eyes good using experience; Besides, designed with an elastic and adjustable headband, fits for most people Adjustable heat and timer: it is easy to use this dry eye sleep mask, controller has 2 buttons, adjusting temperature ranging from 36 to 50 degree Celsius and setting timer (20, 30,40,50 or 60 minutes); With just 2 simple buttons, you can adjust the eye mask to the setting thats most soothing and relaxing for you; Warm note: start to use the heated eye mask at a low temperature and increase the temperature as your eyes get adapt to it Easy to power: you can charge adjustable temp eye mask using USB outlet, like on a portable charger or laptop (USB cord included, no battery bank or power source included), you can easily connect your eye compress for stye to a power source from your bed, couch or other comfortable setting Wide application: suitable for dry eyes, stye, pink eye, blepharitis or MGD, a warm compress for eyes with heated eye mask is incredibly beneficial for relieving irritation, dryness, and redness in the eyes as warmth is known to relieve pain and increase blood flow