Functions: Battery or USB rechargeable mini LED reading lamp, can stand on desk or clip on book. Oval shape light head, can bring wide light range, the light brightness is soft and comfortable for reading. 3 kinds of light color and stepless light brightness, can be adjusted by switch, can meet different using requirements. Stand on and clip on way for use, the clip on way is suitable for both book or table clamping, very practical. For USB rechargeable power way, no need to change batteries, no cable limitation, very convenient. For USB rechargeable power way, the lamp can light on 3-4 hours after full charge, according to different light brightness and color. The tube of lamp is flexible to fit different angle and height use, no matter for reading, keyboard typing, etc. Mini size, can organized in small size for taking, very convenient for outdoor, travel or business trip use. Feature: Material: ABS+PVC+Electronic Components Color: Black, Blue, Pink (optional) Light Color: 3 kinds, adjustable Size: 21.8*2.5*2.5cm-8.58*0.98*0.98inch LED Qty: 2pcs Power By: Battery Type Or USB Rechargeable (optional) Battery Type: 1pc x AAA Battery (NOT Included) Note: There could be some slight differences in the color tone of the pictures and the actual item. Please allow 1-2mm differs due to manual measurement, thanks. Package Includes: 1pc x LED Reading Lamp Package Safety in Retail Box.