... G weight6/7 kgs Inner /Out of box size(cm)64*9*8/65.5*20*27PrincipleNo heat, flame and sparks ... , non-flammable, non-radioactive, waterproof, windproof Usageconcert, dance hall, Halloween, party, promotions, special events, festival, celebration, giveaway, carnivals,bars, nightclubs Our ... FY necklace/light stick/glow light stick/glow stir stick/party/halloween/lighting toy/jewelry -No battery required