... style fan for saving energy Energy saving 12V DC fan, Brushless motor Good quality,best price 12V DC fan,enery saving fanBrushless motortwo speed ... free gift B. AC/DC adapter: optional C. External 12V battery box: optional Recommending reason: 12V energy saving DC table fan No need to ... . 4 warranty period of identification , one year after shipping time. DC fan 12V,new style fan for saving energy