Smart & widely applicableErgonomic design, perfectly fits the contour of the face, the foldable ring shape meets all face shapes, and the length of the headband is adjustable. This instrument uses different intensities of red and blue alternately to make the skin glow and effectively improve facial lines and double chin.NOTE: Cannot be used with metallic substances. Easy to Use and Carry You Can Adjust the Intensity According to Your Needs, Just Wear It for 10 Minutes While Reading, Sleeping, Watching Tv or Doing Housework. Small and light, It is suitable for use in offices, homes, and travel, and is convenient for facial massage anytime, anywhere.The remote control of the product cannot be used normally, and the battery needs to be replaced. V Face InstrumentThe 180 circle design closely fits the chin curve and wraps around symmetrically, making it more effective for tightening and lifting.Start with the lowest gear first. Gradually increase as you get used to it. Perfect ImprovementImprove double chin and prevent sagging cheeks. The V-belt makes the surface smaller and smoother.It takes 4-5 weeks to see noticeable results.NOTE: When the product is not working, the product needs to be charged. The battery of the remote control can be replaced when the remote control is not working.