[3 colors and adjustable brightness adjustment] There are three modes of warm light, warm white light and white light which can be gradually adjusted from 100 % to 10 % brightness according to your needs. [Rechargeable and ] Built-in 1800mAh battery, when the battery is fully , it can be used at 100 % only for 8 ~ 80 hours, with a charging interface, save your battery purchase cost and reduces the production of battery waste, making it more environmentally friendly. [Comfortable to wear and flexible arm] Ergonomic neck support can be adjusted to any angle to secure it around your neck, so it doesn't move around at will and comfortably holds your neck. It can also be adjusted as a desk lamp. The form is used and can be used on the desk. It's also great for reading, knitting, camping, and can be completely hands-free when doing anything. [Eye Caring & others] It is bright enough to adjust the area you place and at the same time bright enough not to disturb your sleeping partner. Adjusting the brightness can reduce the light area without disturbing your partner who sleeps next to you while reading or reading. It can be given as a gift to your or children, so that they have another LED reading lamp. Material:ABS colour:Black Package Contents: 1 x hanging neck light 1 cord Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.