3 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 cold white light (6000K). The reading light automatically turns on at the last color temperature and brightness turned off. Rechargeable and durable: with the included USB cable, the reading light can be charged like a mobile phone, no need to spend money on batteries. Built-in 1000mAh battery provides up to 80 hours of working time (depending on your neck reading light settings). This saves you from having to recharge with an un-dimmed light every day. Ergonomic Design: The neck light design allows your hands to be completely free and stress-free on your neck. The nackenlampe lamp adopts ergonomic design and non-slip cushion, which makes the book fit your neck, which is light and comfortable, and will not cause discomfort even if you use it for a long time. Adopt advanced anti-glare LED light beads to protect your eyes maximally while reading. Long flexible arms: The reading lamp has 360 flexible arms, you can point the light exactly where you want. Choose the best lighting angle in different environments and easily create the perfect brightness for you. Weighing only 128 grams, this table lamp takes up little space and folds easily into a backpack or bag. Friendly for companions: each light head has an independent switch, you do not can light up only one side to be your husband or wife's sleeping area. Don't let reading in bed at night disturb others nearby. Perfect reading for readers in bed. It is a great gift for your partner, children, parents, friends.