Health and wellness for your eyes Spending hours working on the laptop or phone can cause fatigue for your eyes and mind. Fortunately, there are things you can do to alleviate headaches and provide relaxation. The RENPHO eye massager can help. This device can provide 4 different therapy methods compression, vibration, heating, and music. Effectively relieve eye pain, improve blood flow, improve sleep quality, reduce headaches, and alleviating chronic eye soreness. When our eye massager is working, it will compress air and produce vibration and music, which may result in normal sounds. It is ideal for many people teenagers who excessively use their mobile phone or tablet causing eye fatigue or myopia, office workers who use their computer every day, elderly people who have dry eyes, and people who have stress or insomnia. It is lightweight, breathable and waterproof; It will produce a slight odor. Rechargeable large capacity lithium battery and USB charging offer maximum portability. The input is 5V/1A, voltage is 5W. Please use your phone adapter, power bank, laptop USB interface to charge it. There are 5 modes, each mode lasts for 15 minutes and will automatically turn off after 15 minutes; Tips The charging port has been changed from the right end to the middle.