Amplifier Power Output - Front 165W x2 Subwoofer 170W USB 1 (Front) Portable Input AUX IN 1/2 (L/R) 1 (Back) Door Lock Switch (Dial) Karaoke Function - Mic Volume (Main Set) Karaoke Function - Mic Jack Monitor - Type Combined CM4740 Power Power Requirement - Narrow (50/60 Hz) or 220/230V 50/60Hz 110 Power Requirement - Wide 110/220V Power Consumption 57W Standby Power Consumption ↓0.5W Disc 1 Load Type 1-CD Tray Format Playback Disc - CD-R/CD-RW Playback File Format - MP3 Enjoy Karaoke Function Echo Mode Yes Sound Effects Remote Driving & Accessories Remote Control - Unit Yes Remote Control - Model Name MA2 Remote Control - Number of Keys (Option 9) Remote Control 40-Battery AAAx2