Features:
rated capacity: 1800mAh
Long lifespan battery could be cycling used more than 500 times
Used 30LED bulbs are of energy saving, high efficiency and long lifespan
Totatiing the button to adjust white light ,warm light or extinguishing
dual function design ,Using by AC 220V the buikt -in battrry 
Using SMD led ,life and brightess increased of 80%
Mocromolecule silicone rubber rube ,Rotary stepless dimmer ,dimming gradual

Function illustration:
As show instruction:
Charge: directly put the whole plug into the power (AC90-240V)
Push switch to DC is powered by battery ,to AC is powered by220 V 
When charging ,push switch to OFF and the charging indicator will be on
After charging fully, it could be used continuously about 10 hours w
When the LED bulb is dark during usage, that means battery is at the stage of discharging, at this moment, in order to protect the battery, please stop using and charge it in time (please charge before the LED bulb is dark fully, otherwise it would damage the battery)
Desk lamp should be usually used, please don"t shelve it for along time
If you don"t usually use it, please charge it over 8 hours every2 months, or it would affect the battery lifespan

Caution:
The power and socket must be according to safety standard
Please don"t use when charging, it would burn LED bulbs, or damage inner components
Please don"t shine the eyes directly, it would affect the eyesight (children must be instructed by adults)
Keep away from rain or wet
Keep far away from the exploders when charging
The charging time could not be more than 24 hours (suggestion charging in day time)