3 Colors and Adjustable BrightnessEs gibt drei Modi: warmes Licht, warmweies Licht und weies Licht, die schrittweise von 100 % auf 10 % Helligkeit je nach Bedarf eingestellt werden knnen. Rechargeable and Environmental friendlyBuilt-in 1800mAh battery, when the battery is fully charged, 100% brightness can only be used for 8-80 hours, with a charging interface, save the cost of purchasing batteries and reduces the production of waste batteries, making it more environmentally friendly. Comfortable and Adjustable ArmThe ergonomic neck support can be adjusted to any angle to secure it to the neck, so that it does not move freely and holds your neck comfortably. It can also be set as a desk lamp. The form is used and it can be used on the desktop. It is also ideal for reading, knitting, camping, handmade, and can be completely hands-free when doing anything. Eye Caring and Not Disturb OthersKids and adults no longer have eye strain, It is bright enough for the area you positioned and won't disturb 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 boyfriends or children, so they can have a different LED necklace reading light