Widely used Can use in home, school, office, dorm, or travelling. 1.The lamp pole is made of metal hose, flexible, high hardness, can be fixed in any position,provides a full range of multi angle selection; 2.With a clip, can be clamped, beautiful appearance and lightweight, easy to carry, the weight of about 215 grams. 3.The intelligent power switch at the base of the lamp, you can adjust the brightness of the light, click on the brightness of 50%, then click on the full light of 100%, and then click on the power off. 4.The base with power socket design, can be connected to the USB, DC power supply for the product. Power Supply Mode (can choose any of the following): (1).USB power supply and recharging battery ,battery can be used continuously for about 24 hours (low brightness), about 16 hours (high brightness). (2).AC110-240V power adapter, no need to remove the battery when used, when the power adapter inserted automatically switch to the external power supply type. Package includes: 1 x Music Stand Light ?built in rechargeable battery) 1 x AC Adapter 1 x USB Cable