WORK AS A BOOKMARK -- Built to be slim, so that you can use it as either a reading lamp while in use, or a bookmark while out of use.
4-BRIGHTNESS & 3-COLOR BY 1 SWITCH -- Short press the button to switch the 3 color temperatures, and long press the button to adjust the brightness according to your reading environment.
EXACT LIGHTING RANGE ON YOUR PAGE -- To avoid disturbing others sleeping beside you, we limited the range to light up your book pages exactly in darkness.
BUILT-IN USB CHARGING HEAD -- We inserted the USB charging head to the end of the central strap, simply plug it into any USB port on your laptop, power bank, phone charger, etc, to start its convenient charging.
LASTING 6-8 HOURS -- Every full charge will provide you 6-8 hours of illumination depending on the brightness, perfect for travel, reading on bed, car, bus, etc, a thoughtful gift for reading lovers.