1. No need of battery; 2.The energy-conservation of environmental protection; 3.It adopts exquisite mechanical structure and high-efficient miniature generate electricity and make LED light over 10 minutes continuously in 15 seconds to generate electricity each time; 4.Adopt the high-light LED of import illuminated act as the light source, energy-efficient; 5.The life using of LED is in above 10000 hours. Packing Info: 1.Packing size(cm):48X33.5X37.7 ( 60 pcs) 2.Gross weight (kg): 12.30 3.30,000 pcs/20FCL/6150kgs