uxcell 3W 4 Ohm Metal Housing Round Magnet Speaker Loudspeaker 2Pcs Product Name : Magnet Speaker;Power : 3W Resistance : 4 Ohm;Type : Internal Magnetic Shape : Round;Magnet Diameter : 18mm/ 0.71" Diameter : 40mm/ 1.6";Material : Metal, Plastic Weight : 40g;Package Content : 2 x Internal Magnet Speaker