It is made of kraft paper with 90% light transmittance and high-quality white maple wood. Switching the light color by open and close the book light, yellow, red, purple, green, blue, and has automatic gradient mode-circularly 5 Gradual Change colors. The foldable book lamp can work for 6 hours after charging for 3 hours. It is also an ideal gift for your children, parents or friends, especially on special days such as Christmas, Valentine's Day or Thanksgiving Day. 8 1/4"L x 6 11/16"W x 15/16"H