Book Light, HotSan Reading Light Led Clip Reading Light with Eye Protection 3 Level Brightness USB Travel Book Lights for Bed, Rechargeable, Portable, [3 Brightness Settings]: Book light with 8 LED dimmable bulbs, 3 brightness settings - High light, warm light, white light modes,press the button on the lampshade to adjust its brightness according to your needs. [Eye-Protection]: Book lamp with three natural, non-flicker lighting modes for personal preference,providing a comfortable and meticulous for your eyes. [Flexible Gooseneck & Portable]: The 360 flexile gooseneck enables to put the light on the most appropriate position for optimal reading experience, Buit-in battery and mini size and portable design allow it to go anywhere as your want. [Ultra-long Standby Time]: Our book light buit-in 900mAh lithium rechargeable battery, which supports up to 10 hours illumination after fully charged. [Money Guarantee]: There is a 90 days money guarantee. If you have any question or dissatisfied with our book light, please feel free to reach us immediately to ask for a refund or new replacement.