Features: 1) Adopt far infrared heating and microcomputer chip control technology 2) Fomenting, vibration and kneading 3) Can help to add oxygen and dredge channels on eyes 4) Restore muscle flexibility 5) Release visual disturbance 6) Promote metabolism 7) Maintain eyesight health Functions: 1) Ideal for eyes health 2) Relieve pseudomyopia 3) Relieve myopia, amblyopia and astigmatism 4) Relieve optical axis prolonging and distortion 5) Relieve eyes tension and fatigue 6) Improve blood circulation 7) Relieve insomnia, headache and hypermetropia Outer packing: 20pcs/ctn