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 of charging lasts about 8 hours (at full brightness). No longer waste money on batteries. EMPHASIS EYE PROTECTION: The book reading light 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 light, 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.