3 Colors & Adjustable BrightnessThere are three modes: warm light, warm white light and white light, which can be gradually adjusted from 100% to 10% brightness according to your needs. Environmental protectionBuilt-in 1800mAh battery, after fully charged, 100% brightness can only be used for 8-80 hours, with a charging interface, saving the cost of purchasing batteries, reducing the generation of waste batteries, making it more environmentally friendly. Comfortable and Adjustable ArmsThe ergonomic neck support can be adjusted to any angle to fix it on the neck so that it will not move freely and hold your neck comfortably. It can also be set as a desk lamp. Table use, can be used on the desktop. It's also ideal for reading, knitting, camping, crafting, and doing everything with total hands-free use. Eye Protection and Eye ProtectionDo not disturb othersNo more eye strain for children and adults, it is bright enough for the area you locate without disturbing your sleeping partner. Adjusting the brightness can reduce the range of light without affecting your reading or sleeping partner. It can be given as a gift to your boyfriend or kid, so they can have different LED necklace reading light If you receive the goods and find the light is not bright enough, please charge it in time.