THE NEW XO Vision IR-290 Universal IR Wireless TOUCH ON/OFF SWITCH + VOLUME CONTROL AND(Includes 2 BATTERYS) Automotive Headphones for In-Car Video Listening TOUCH ON/OFF SWITCH + VOLUME CONTROL / INFRARED WIRELESS STEREO HEADPHONE EXTRA PADDED EAR AND HEADBAND CAUSHION POWER INPUT TOLERANCE: 40mm MYLAR CONE IMPEDANCE: 32 OHMS + / - 4 OHMS /AUTOMATIC MUTE (NO NOISE CIRCUIT DESIGN) AUTOMATIC POWER OFF IF NO SIGNAL (SAVE BATTERY LIFE)