USB charging white LED light 4W

USB charging white LED light 4W   Led reading light Parameter: 1,Power:6W 2,Voltage:DC12V/24v 3,Mterial:Plastic 4,LEDS:6pcs 5,Type:double arm 6,Lifetime:50000h 7,Apply to reading   have kinds of different: power: 2*1W,2*2W,2*3W Or single arm 1W 2W 3W 4W   This lamp is convenient lamp for modern type: You can choose different combination:   Firstly: the lamp + USB data line(just can light on computer)   Secondly: lamp +USB data line+plug (can lighting on computer and socket seat)   Thirdly: lamp+USB data line+plug+lithium battery(suitable secondly using and also can charing , that full charging can using exceed 10 hours)   This is environment choose, you can as you need to choose suitable combination.