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With super power， the first charge for 14 hours after each charge for 10 hours. The case is fully charged， all 12 bright lights， can be used 12 hours or so， open six lights， you can use it 25 hours. 12 LED bulbs emit light， when the read and write even more subdued. 

 

 

Weight: 400g 

Size: 19cm * 13cm * 8cm Expand Size: 26cm * 13cm * 8cm 

Package Size: 13cm * 19cm * 14.5cm 

Material: ABS 

Product Content: USB interface cable * 1， * 1 lamp power supply cord: 0.02W / a total of 0.24W