【 Adjustable Arm and adjustable arm can be bent randomly ,free to choose the area to be illuminated . Portable and lightweight ,take it with you while traveling ,it is easy to carry . 【 Protect Your Eyes 】:No flicker ,no dark areas ,no ghosting ,help eliminate the visual fatigue caused by the stroboscopic effect of traditional light sources . Protect your eyes when you are reading ,drawing ,working ,studying 【 USB Port】:With USB port power supply ,this LED desk light is suitable for a variety of devices ,such as computers ,mobile power supply ,USB charger ,and so on .Very convenient to use 【 Flexible in Use 】:This LED clamp light can stand on desk with the base as normal desk lamp and also available to clip almost anywhere and any angle with its anti skid clip . 【 Energy Saving 】:This clip on reading light uses LEDs which saves up to 80% of energy used by traditional lamps ,yet still provides you the same brightness ,long service life .