The new Stratus 30XT power management system allows you to power the headset from the aircraft panel, standard alkaline batteries, or rechargeable batteries. The Stratus 30XT offers a built-in battery recharger that recharges when plugged into a wall socket, the aircrafts panel power or even your cars 12-volt power outlet. The Stratus 30XT automatically senses the type of battery youve inserted so you cant make a mistake. The exclusive microprocessor-control battery management system ensures more than 50 hours of battery life one of the longest on the market. Customize your headset for a comfortable fitTelexs patented ComfortCam system allows you to fine tune headband tension to eliminate clamping. Comfort is enhanced by a unique headband construction that distributes weight evenly for a perfect fit, plus thick foam headband pad and newly designed, more comfortable cushions. Audio device management made simpleAlso included is Telexs innovative cell phone/MP3 adapter which allows you to attach both your cell phone and MP3 player at the same time no more switching cords! Plus you can mute both devices with the flick of a switch. Total Noise Reduction 30 dB ANR protection. Flexible Power Management System Use standard alkaline or rechargeable batteries with a built-in battery recharger. Recharger works off the aircraft's panel power or any 12-volt power outline. Automatically senses battery type. Battery box power indicator shows you when the unit is on or off, when the battery power is low, when it's recharging - it even indicates the power status of your cell phone and or other accessories plugged into the headset. Battery Management System Ensures more than 50 hours of battery life- one of the longest on the market. Auto Shut Off Automatically senses when the headset is not in use and powers down to conserve batteries.