O2 EL5254 5.25inch. 4-WAYSpeaker, 120 Watts (O2 EL-5254 5.25inch. 4WAY 120W Speaker) SIZE: 5.25 inch. Max Power: 120W(60WRMS) Frequency: 80-20KHz Sensitivity: 88dB/W/M Voice Coil: 25mm