Active noise reduction, powerfully clear communication, and nearly unlimited battery life The 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 aircraft panel power or even your car??s 12-volt power outlet. The Stratus 30XT automatically senses the type of battery you??ve inserted so you can??t make a mistake. Our exclusive microprocessor-control battery management system ensures more than 50 hours of battery life ?? one of the longest on the market.