Color temperature and stepless dimmer: Each lamp head has an independent switch, long press to adjust the brightness. 3 color temperature modes: warm light (3000K), natural light (4500K) and cool white light (6000K). The reading light automatically turns on the color temperature and brightness of the last turned off. Rechargeable and Durable: With the included USB cable, the reading light charges like a cell phone without having to spend money on purchasing batteries. The built-in 1000 mAh battery provides up to 80 hours of working time (depending on your neck reading light settings). It saves you from recharging every day with undimmed light. Ergonomic design: The design of the neck lamp makes your hands completely free, without pressure on the neck. The book lamp has an ergonomic design and a non-slip pad to make the book fit your neck, light and comfortable, it will not cause discomfort even for a long time. Adopt advanced glare-free LED light beads to maximize your eye protection when reading. Long Flexible Arms: The reading light has 360 flexible arms, you can direct the light exactly where you want. Choosing the best light angle in different environment, easy and easy to create the perfect brightness for yourself. With a weight of only 128 g, this reading light takes up little space and can be easily folded into a backpack or bag. Friendly Partner: Each lamp head has an independent switch, you can only turn on one side to make the area where your husband or wife sleeps. No longer make reading in bed at night a disturbance to others nearby. Perfect reading book for readers who lie in bed. It is a great gift for your partner, children, parents, friends.