Wireless and 1800mAh battery operated. This lamp uses a rechargeable large capacity battery so there is no need to charge frequently. It will be fully charged after 3-4 hours with the included USB charging cable. It can be used for 11-15 hours at normal brightness and 80 hours at minimum brightness. You can take your lamp anywhere. Dimmable Function. You can create the ideal brightness with unlimited dimming. Long touch the plus or minus symbols to select the optimal brightness. Low brightness for a romantic atmosphere or baby nursery, high brightness for a party or camping. Eight Colors Changing and Three Modes. You can create different effects to adapt to your mood. This lamp has eight colors and three color changing modes to choose from: jump, breath and gradient. You can choose the right color for a romantic dinner, active party, or warm home theater. Smart Timer. The lamp has a smart timer. You can set the timer to turn off after one, two, four, or six hours. The lamp will turn off automatically after your kids fall asleep. After-Sales and Notice. This lamp is very durable and we offer a one-year guarantee. If you have any quality problems, please click the seller name and Ask a Question to get a refund or a replacement. When the lamp flickers, the battery is low and needs to be charged. If the battery is weak, the touch function may be impaired.