Package information: you will receive 2 LED rotary pens, which are ingeniously designed, comfortable to hold, easy to operate and use, the quantity is enough to facilitate your use and replacement Durable quality: the rotating pen is made of anti-skid, wear-resistant and pressure-resistant materials, which is durable and easy to grip; In order to get nice balance performance, we have designed metal pen heads on both sides of the pen to make it easy for you to turn Ingenious design: the 2 ends of the rotating pen are weighted to achieve the golden balance point, so as to improve the flexibility of use; Designed with drop-resistant pen cap to increase durability ; LED light shows a gradual change, the color is very dazzling and charming Battery assembly method: each rotary flash pen is equipped with 6 button batteries; When the battery is out of power due to long-term use, you can prepare your own battery for replacement; The battery assembly is easy, just turn the top switch anticlockwise to remove the batteries, and then install the new batteries in the same direction as the preceding batteries Use function: rotary pen can exercise the flexibility of fingers, and help you get rid of the pressure of work and life; In addition, color gradient replacement can bring you a happier mood and add more fun to life