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Powered by a small solar panel that absorbs sunlight and produces electricity, the fan will keep the wearer cool. With caps available in polyester, cotton twill or plaited bamboo materials, these products are ideal summer gifts and promotional products.
Feature:
1.Mono(Multi)crystalline solar battery;
2.Material(suggested): 100% Cotton twill;
3.Plastic backstrap;
4.OEM logo service;
5.Swith (optional);
6.you can turn the switch on or off (with switch);
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