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. 

• Eye protection lamp utilizes 20 no flash lamps offers a light that is perfectly suited to protect eyes from strain

• Simple and elegant design, modern and fashion appearance

• 360 degree adjustment, the flexible silicone gooseneck rotates and adjusts to different angles

• Energy-saving and low power consumption, Long lifespan

• USB Rechargeable, built-in 1200mAh Li-ion battery

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

Specification:

• Brand: REMAX

• Model: E190

• Material: ABS+PC

• Color: white

• Battery type: 1200mAh Li-ion battery

• Weight: 183g