Ayotu Clip-on LED Reading Light Lamp Flexible Arm E-Reader Bookmark Light with USB Rechargeable 4-Level Adjustable Brightness for Book,Kindle,eReaders, Tablet, iPad, Kobo, Laptops etc Black 360 Degree Flexible: Ultra flexible body for adjusting any angle according to your different reading posture. Eyes Protection LED Lights: Perfect Soft light care more about your eyes in darkness, provide you with the best reading experience. Four Brightness&USB Charging: Adjust four brightness by one button. USB rechargeable without extra cable. Take 30mins charging and can last 48 hours reading. Perfect Bookmark: Detachable clamps, the ultra slim size makes it perfect to use as a bookmark. Portable design can carry as bookmark while inserting in your book. Portable & Lightweight: Whether on the train, on the plane or camping, you can use it anytime, anywhere, and it will not bother others. Meet your need for any occasion.