Elysium Libretto Hi-Fi Bluetooth Stereo Headset - Slate Hi-fi headphones with wireless capabilities and built-in mic and controls Streams audio wirelessly from any bluetooth source device e.g. Computer, tablet, smartphone etc. Battery level indicator available on iphone and ipad [supported in ios 5/6] Brushed aluminium on-board control panel; designer high-quality leatherette headband; ultra soft and elastic pleather cushions Includes an auxiliary (aux-in) 3.5mm audio jack for wired usage in case of low battery; airline adaptor and premium neoprene protective case included