[3 Colors and 6 Adjustable Brightness Levels] Unlike other bedside reading lamps, the neck lamp 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 meet your needs. For example, yellow light for general reading; warm white for studying; cool white for precision sewing or crocheting. [Rechargeable and Long-lasting] Compared to other Micro-USB reading lamps, our USB-C rechargeable LED reading lamp is easy to use and safer for the elderly and young. That's because USB-C has a "one-size-fits-all" design, easy to connect from any side. Plus, the built-in 1000mAh battery offers a battery life of 80 hours (depending on the reading lamp settings). Keeps you away from the daily burden with undimmable light. [Ergonomic Design & Eye Protection] Our reading light does not produce flickering or glare, preventing eye strain, and is a perfect reading light for reading in