It can be powered by built-in battery so it's wireless and portable. You can take it move around, in your house or take it with you when travelling. It can be used in home, office, dorm, or travelling. Can use for reading book study piano bedside lamp and general desk table light. 

• Foldable design, saving up your space and easy to carry around
  

• Concise touch switch with infinitely variable brightness

• Rechargeable, built-in 1500mAh Li-ion battery

•  It can stand on desk with its own anti-skid base just like common lamps
  

Specification:

• Brand: YAGE

• Model: YG-5929

• Material: ABS

• Color: white

• Power: 2.4 W

• Rated voltage: DC 4.5V

• Total emitters: 10

• Color bin: cold white

• Color temperature: 6000K

• Theoretical lumens: 240 lumens

• Actual lumens: 216 lumens

• Power adapter: USB

• Battery type: Li-ion battery