护眼圈 / Eye protecting ring

Although eyes are small,it still allows us to see the whole world. However,the writing which is not correct posture inadvertently hurts our eyes.The design is that the eye protecting ring at the top of the pen.It is through the inner wall of this eye protecting ring to activate the sensor, to enter the working state.So the eye protecting ring by the distance between eyes and writing paper induction.When the distance through the close will flash a red right and vibration to remind is transferred to the wrrect position.Its power comes from the product when writing induction.Pen itself bring the vibration of the raw power and stored.