Lightspeed ZULU Premium ANR Aviation Headset (Battery Power, Straight cord, Standard Dual GA Plugs) ANR: Active cancellation over a deep, broad range of low frequency noise. Comfort and Durability: Weighing in at 13 ounces, extended wear is a pleasure. A thin, low-profile, stainless steel headband helps with cabin clearance and adds durability. Designed for comfort with plush ear seals, the magnesium ear cups extended range performance profile is superior at blocking Bluetooth Connectivity: Full A2DP compatibility allows wireless connection from Bluetooth phones or other devices. An integrated control box input allows you to connect a cell phone, music player or iPod for a range of communication options.