1. 3 different LED beads New design added new light source to improve the light of our book. Amber light is 99.95% blue light free to encourage you to sleep better after reading for a while. 4 colors x 3 brightness settings.^2. Eye protection LED source The light source is soft and suitable for reading / working because it will not produce flicker, shadow, dizziness or negative radiation. The most suitable light can shine on both pages of a book, notebook or whatever, making reading less tiring on your eyes. You can read in bed to enjoy your time without disturbing your partner or roommate.^3. Adjustable neck and staple cushion The flexible gooseneck allows it to be folded 360 degrees into any desired position, and its lightweight size and compact design make it easy to carry, even in trip. The sturdy clip block can stand on its own or firmly clamp an e-reader, book, bookshelf, etc., it fits many places.^4. USB rechargeable battery Built-in Li-ion rechargeable battery and micro USB port, it can last up to 60 HOURS of reading without charging (in low light), and full charge does not take long time. The package contains universal USB charging cable, so it can be charged by laptop / computer, power bank, phone charger, car USB, etc.^5. Lightweight and portable for multiple uses When you are in the dark or under unreliable light source, it can be used as a lighting tool such as book lamps or bedside lamps for writing a newspaper, study, read children's night, keyboard lighting, makeup, painting, sewing, desk, camping, computer lighting, crafts or other odd jobs.^