Ergonomic Comfort-fit: Foldable and adjustable PU leather headband for noise reduction and comfort fit. Built in Microphone and Controls: Enjoy a completely hands free listening experience with a built-in microphone for high definition calls ; Control your music or answer/end phone calls right from your headset with built-in controls. AUX Mode: Detachable 1.5 meters cable makes this headphone as normal wired headphones when the internal rechargeable battery is exhausted. Excellent Compatibility: Compatible with All Android Phones IOS and Blackberry System Phones. End/answer Phone Calls Pause/play Music Support with Switch of Previous/next Songs. What You Get: Gorsun E83 Bluetooth headphones Micro USB charging cable AUX cable User manual our worry-free 12-month warranty and friendly customer service.