【SUITABLE FOR THE SCENE 】- This neck book light made of high quality silicon rubber.Easier wearing it on your neck to free hands. Ideal for reading book, night jogging and mending. | 【LITHIUM BATTERY POWER SUPPLY 】- Built-in 850 mAh Li battery, need about 2 hours to get fully charged and can work more than 8 hours. The Li battery can be recharged 5000 times. | 【3 BRIGHTNESS MODES】 - This book light has 2 kinds of LED lamp(2 Spot lamps, 2 flood lamps ), 3 lighting mode：flood light mode, spot light mode and spot light&flood light mode. Simple to create the suitable mode for yourself. | 【SUFFICIENT BRIGHTNESS】 - Each lamp brightness is up to 20 lumens,it is about 80 lumens when 4 lamps work at the same time. | 【EASY TO CARRY ON】 - Only 115 g(4 oz) weight, the neck light doesn't require much space and can fit easily into your carry-on suitcase.