Specification:
Voltage: DC5V
Wattage: 0.6W
Current: 120MA
LED chip: SMD5152
Light color: warm white
Color temperature: 3500-4000K
Dimension: 27*12*2.5mm
 
Feature:
Double-sided USB design
The pros and cons can be lit, liquid crystal display backlight lamp beads thin, ultra-bright, long not to hurt the eyes. USB jack can be placed in any place, business travel essentials.
Touch switch
Touch the area belonging to the black area in the back of a small lamp, after the release energized as long as the touch of a
hand, LED light from dark to bright onwards, when the need to turn off lights when tapping the back of the touch zone lights
will automatically from light to dark off.
Stepless dimming
This section can adjust the brightness of LED lights according to your needs, methods of operation are as follows:
When the lamp is lit when long press on the back of the touch area does not let go, the light will begin to gradually darken to your satisfaction brightness when you can let go, when a long press on the back of the touch area again let go, the lights began to brighten, brightness to your satisfaction you can let go.
Application: 
Standard USB port, such as portable power source, notebook, desktop computer, etc.
 
Package included:
4*USB LED light