Key Features: 1.Air pressure vibrating massage modes: Using air presses shrink and expand massage eyes. 2. Fomenting, vibration and kneading Maintain eyesight health; relieve eyes tension and head fatigue 3. 4.Air pressure and fomenting, air pressure and vibration; fomenting and vibration; three group circulate massage modes. 4. A/C and D/C use both ok 5. Massage time for free choice. Specifications: Voltage：a.c3V Frequency：50Hz Power：5W