[3 Colors & 6 Adjustable Brightnesses] Unlike other reading lights in bed, 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 light settings to suit your needs. For example, a yellow light for general reading; a warm white to study; a cool white for precision sewing or crocheting. [Refillable & long service life] 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. That's because USB-C is a "one size fits all" design, easy to plug into any side. Additionally, the built-in 1000mAh battery provides up to 80 hours of battery life (depending on eReader lamp settings). It keeps you away from the daily burden with non-diminishing light. [Eye care & Ergonomic design] Our book reading lamp does not produce flickering or dazzling light, save you from eye strain, it is a perfect night reading lamp for bed reading. Ergonomically shaped, clinging to your neck; The arms are soft and adjustable making it easy to adopt the most comfortable angle - an ideal lighting aid for hands-free activities. < p>[Compatible with partners] This reading lamp has a narrow beam angle (90), which is low enough not to disturb people nearby. At the same time, neck lamp can illuminate the specific area you want to illuminate and emit abundant light without producing light disturbance for your partner. A perfect reading lamp for readers in bed. 1. FCC, CE, RoHS, PSE approved. 2. The product box contains: 1* LED neck 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.