[3 Colors & 6 Adjustable Brightness] Unlike other bedside reading lamps, Glocusent neck light has 3 useful color temperatures: yellow (3000K), warm white (4000K) and cool white (6000K). It has 3 brightness levels per arm and different combinations of reading lamp settings to suit your needs. For example, yellow light for general reading; warm white for studying; cool white for precision sewing or crocheting. [Rechargeable & Long Lifespan] Compared with other Micro-USB book lights, our USB-C rechargeable LED reading light is user-friendly and safer for the elderly and young people. This is because USB-C is a one-size-fits-all design, easy to plug in any side. Besides, the built-in 1000mAh battery provides a battery life of 80 hours (depending on the reading lamp settings). It keeps you away from the daily burden with non-dimming light. [Eye-Care & Ergonomic Design] Our book light does not produce flickering or dazzling light, preventing you from eye strain, it is a perfect reading light for reading in bed at night. In addition, the night reading lights are ergonomically shaped, hanging around your neck; the arms are flexible and adjustable, making it easy to adopt the most comfortable angle - an ideal lighting aid for hands-free activities. [Partner-Friendly] This reading light has a narrow beam angle (90), which is low enough not to disturb people nearby. At the same time, the neck light can illuminate the specific area you want to illuminate and emit abundant light without producing light disturbance for your partner. A perfect reading light for bed readers. 1. FCC, CE, RoHS, PSE approved. 2. Product box contains: 1* LED reading light 1* USB Type-C cable (24") 1* User manual 1* Bookmark 3. NOTE: Use the included Type-C cable, your original cable, or a certified third-party cable; AC adapter not included.