Rechargeable and environmentally friendly:Built-in 1800mAh battery, after fully charged, 100% brightness can be used for 8-80 hours, with a charging interface, saving charging costs. Buy batteries, reduce the production of waste batteries, and be more environmentally friendly. Comfortable and Adjustable Arms:The 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. Its also great for reading, knitting, camping, crafting, and totally hands-free when doing just about anything. Eyes Care, No Disturbing Others:No more eye strain for children and adults, bright enough for the area you locate, not 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 kids so they can have different LED necklace reading lights Color:Black, White(optional) Package List: 1 x Neck Reading Lamp 1 x Charging Cable 1 x Manual