FLEXIBLE BOOK LIGHT: flexible design, the light lens can be rotated 90° counter-clockwise, 180° clockwise, 45° downwards, 350° flexible holder bends to any angle for best viewing. Perfectly meets your needs for light direction. Light modes: Light temperature adjustable (warm, white, amber) Most suitable light color for eye care reading. When the light is ON, press and hold the button to change the brightness for each color. USB RECHARGEABLE & LONG BATTERY LIFE: Easily charged with built-in USB, plug it directly into your laptop, power bank, adapter, car charger or USB outlet for charging, no extra cables needed. 200mA lithium battery, 1.5 hours charging lasts about 8 hours (at full brightness). Don't waste money on batteries anymore. EMPHASIS ON EYE PROTECTION: The book reading lamp uses soft lighting to effectively reduce eye fatigue and glare. Whether you are reading for a long time or in a dimly lit environment, this lamp will provide you with a comfortable reading experience. MULTIFUNCTIONAL DESIGN: These lights can not only be used as a reading lamp, but also as a bookmark, camping light, fill light, flashlight, night light or even a mobile phone holder. Whether you are outdoors or at home, it can meet your many needs.