Color Temperature & Stepless Dimming: 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 from the last shutdown. Rechargeable & Durable: With the included USB cable, the reading light charges like a mobile phone without having to spend money on buying batteries. The built-in 1000mAh battery provides up to 80 hours of work (depending on your neck reading light settings). It saves you from charging every day with undimmed light. Ergonomic Design: The neck lamp design makes your hands completely free, without pressure on the neck. The 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. Use 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. Choose the best light angle in the different environment, easy and simple to create the perfect brightness for yourself. Weighing only 128g, this reading light takes up little space and can be easily folded into a backpack or bag. Partner Friendly: 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 lying in bed. It is a great gift for your partner, children, parents, friends.