... :5*15cm2.Use a bright LED light bulbs as a power source, white light, very energy-saving,life expectancy up ... 3.When using this product, because the book light head with a folder insulation film,so you need ... , but also beautifully practical gifts.6.The Book Light can be more than one point of rotation, ... so that you always read in bright light, with the following clip, you can easily clip ...