[3 Colors] Unlike other lamps for reading in bed, the neck lamp has 3 useful color temperatures: yellow (3000K), warm white (4000K), and cold white (6000K). It has 3 brightness levels per arm and various combinations of reading light settings to suit your needs. For example, a yellow light for general reading; warm white for studying; cool white for precision sewing or crocheting. [Rechargeable & Long Lifespan] Compared to other Micro-USB book lights, our USB-C rechargeable LED book light is user-friendly and safer for both elderly and younger users. USB-C features a "one size fits all" design, making it easy to plug in from either side. Additionally, the built-in 1000mAh battery provides up to 80 hours of battery life, depending on lamp settings, delivering consistent, non-dimming light and reducing the need for frequent charging. [Eye Care & Ergonomic Design] This book reading light produces no flickering or glare, helping to reduce eye strain, making it an ideal night reading lamp for use in bed. The neck lamp features an ergonomic design that rests comfortably around the neck, with flexible and adjustable arms that allow you to position the light at the most comfortable angle—perfect for hands-free reading and other activities. [Compatible with Partners] The reading lamp has a narrow beam angle of 90 degrees, low enough not to disturb others nearby. At the same time, it effectively illuminates the specific area you need with ample brightness, without causing light disturbance to your partner. A perfect lighting solution for readers in bed.