uxcell 40mm Dia Round Internal Magnetic Speaker Trumpet Horn 0.5W 8 Ohm 2Pcs Product Name : Magnetic Speaker;Power : 0.5W;Resistance : 8 Type : Internal Magnetic;Shape : Round Bottom Diameter : 17mm/ 0.7";Diameter : 40mm/ 1.6" Height : 4mm/ 0.16";Material : Metal, Plastic Weight : 18g;Package Content : 2 x Internal Magnet Speaker