[3 Colors 6 Adjustable Brightness] Unlike other bed reading lights, the neck light has 3 useful color temperatures: Yellow( 3000K), warm white (4000K) and cool white (6000K). Each arm has 3 brightness levels and different combinations of reading light settings to suit your needs. For example, yellow light for general reading; warm white for research; cool white for precision sewing or crocheting. [Rechargeable Long Lifespan] Compared with other Micro-USB book lights, our USB-C rechargeable LED book lights are user-friendly and safer for both old and young. That's because USB-C is a "one-size-fits-all" design that can be easily plugged into either side. Plus, the built-in 1000mAh battery provides up to 80 hours of battery life (depending on e-reader light settings). The non-dimming light keeps you away from everyday burdens. [Eye-Protecting Ergonomic Design] Our reading light will not produce flicker or glare, keep you from eye fatigue, c it is a perfect night reading light for reading in bed. In addition, the night reading light has an ergonomic shape that fits snugly around the neck; the arm is flexible and adjustable, making it easy to adopt the most comfortable angle, making it an ideal lighting aid for night reading. Hands-free activities. [COMPATIBLE WITH PARTNERS] This reading light has a narrow beam angle (90), low enough to not disturb those nearby. At the same time, the neck light can illuminate the specific area you want to illuminate, emit sufficient light, and will not cause light interference to your partner. The perfect lamp for bed readers.