... , no battery required Advantage: Non-toxic, non-flammable, non-radioactive, wat Erproof Certification CE,SGS,ASTM,MSD,SVHCSize 15mm*180mmGlowing time ... and sparks, no battery requiredAdvantageNon-toxic, non-flammable, non-radioactive, wat erproof, windproof Usageconcert, dance hall, Halloween, party, promotions, special events ...