Round Mylar Speaker 36mm 8 Ohm with Connector Features Input Power: 0.2 W nominal / 0.5 W maximum Sound output: 84 dB Frequency: 530 Hz A 150 Hz Impedance: 8 Magnet size: 0.49"Dia. x 0.06"H Speaker size: 1.4" Dia. x 0.14" thick 14" wire leads with connector