1W 8 Ohm;Feature: with Wire;Wire Length : 20 mm / 0.79 inch;Magnet Diameter : 11 mm / 0.43 inch.SIZE - 16 x 4 mm / 0.63 x 0.16 inch (Diameter * T).FIT for - robot, advertising machine, game machine, integrated machine special speakerAPPLICATION - suitable for all kinds of sound source fabrication, the sound is clear and melodious without distortion.PACKAGE CONTENT - 4 x Stereo Speaker