led designed with 16 LED bulbs, the light source is soft as it does not produce flickering, dizziness or radiation. Rechargeable reading lamp memory function makes the brightness and color temperature the same for the next restart, and you don't have to adjust the right light again. 360 Flexible Neck & Min Size: The upgraded 360 flexible lamp neck allows you to adjust your lamp to any angle you desire, providing you with 360 omnidirectional illumination. Mini size clamp lamp and compact design also make it easy to carry. Long Working Time & Power Indicator: USB Charge, book light provides up to 25 hours of light time (at low brightness setting) with just 2 hours of full charge, allowing you to enjoy longer wireless reading time. With the battery indicator, it's easy to know the remaining charge and charging status. Multiple Applications: Led desk lamp the clamp can open 5-25mm, great for bedside, book, laptop, bookshelf, etc. usb lamp the interior of the clip has non-slip mats to protect the book lamp and prevent it from slipping. Note: The data are manual measurement, please allow a 1-3cm error, due to the differences between the light and the display, there will be a certain color difference, the specific received in kind prevail.