uxcell 4 Pcs Multimedia 3W 4 Ohm 40mm Dia Aluminum Internal Magnet Speaker Product Name : Magnet Speaker;Power : 3W Resistance : 4 Ohm;Type : Internal Magnetic Shape : Round;Magnet Diameter : 22mm/ 0.8" Diameter : 40mm/ 1.6";Material : Aluminum, Plastic,Magnet Weight : 100g;Package Content : 4 x Internal Magnet Speaker