1.【Cordless Desk Lamp Rechargeable Table Reading Light for home office 】: This rechargeable desk lamp has long light board,Lamp Highest 17.7 inch,portable lamp for anywhere without power socket，such as lamp for bed,bedside,desk ,table 2.【Two Ways Power: Cordless Lamp Powered Rechargeable Battery or Powered by usb cable plug in charger (charger not included)】This desk lamp can be used for anyplace without power socket with rechargeable battery or powered with cable plug in charger. 3.【 Touch control to switch 3 modes of Light Temperature,6 Brightness dimmable adjustable desk reading lamp】: Cool White,Warm White,Natural Day White Light. LED dimmable brightness adjustable, good desk lamp reading book light for home bedroom bedside 4.【Long Light board 30 Led,Eye care led desk table reading book lamp for kids children study】: it uses 30 pcs eye caring LED, flicker-free, no dizzy light and filter blue light, great eye caring for kids reading book, study and office working.r capacity 】Desk Lamp With USB charging Port, you do not need to buy batter for this reading book light. 5.【Portable wireless desk lamp for reading book, study,task, work】The light can stand on bed,desk,table,bedroom nightstand headboard. ,and built in rechargeable batter with usb charging port, no need to connect usb cable for power supply