Ingeware Heated Eye Mask - Advanced Technology Superior Results Easy and Convenient to Use, Effectively Improve Eye Health & Eye Care Previous page Conection Insert the DC plug into the port on the eye mask and connect the USB to any 5V1-2A power supply (power supply not included); For the best heating experience, we recommend using a 5V/2A power supply Temperature & Time setting Choose temperature from Level I to Level V, set the heating time. The recommended temperature and heating time are Level III - Level IV for 20-30 minutes Spray for Steaming Spray water and gently dampen the eye mask Optimal Enjoyment of Use Place the mask on eyes and adjust the straps to fit comfortably. Enjoy a relaxing eye spa Next page Comfortable and No Pressure on Eyes Previous page Next page Suitable for a variety of use situations Previous page Next page 1 Break at work 2 Trip 3 Napping 4 Perfect Gift For multiple symptoms Constant Heat for Dry Eye Relief