The MMX 41 iE is the ideal upgrade for your iPhone, iPad, Blackberry, HTC or other compatible mobile phones. The sound is the same like with the DTX 41 iE, made to get right into the music, and due to its integrated microphone the MMX 41 iE can be used for receiving or ending phone calls at the push of a button. The package includes a Skype/VoIP adaptor and a soft carrying case. Take Calls While Listening to Music The highly efficient Neodymium HD acoustic drivers deliver not just rich, full-range audio from your favorite music and podcasts, but also from calls on your smartphone, or VoIP applications such as Skype. The MMX 41 iE features an in-line hands-free microphone with call control button that's compatible with iPhone, iPad, Blackberry and HTC (separate adaptors for models of Nokia, Sony Ericsson, Samsung, Motorola, LG available, sold separately). Dynamic Neodymium Drivers Powerful Neodymium HD acoustic drivers in the MMX 41 iE headphone give you rich and balanced full-range sound from your favorite music, podcasts, and more. Offering strong bass response with a low end reaching to 15Hz, the MMX 41 iE is not just an entry-level headphone. Rugged Construction The durable plastic housing of the MMX 41 iE lives up to your active lifestyle, making it perfect for use during activities such as jogging, working out, and more--without compromising on style or sound quality. Carrying Case Included A soft case is included in the headphone package, making it easy to carry your MMX 41 iEs with you wherever you go. The case provides simple protection and packs easily into a laptop bag, backpack, or purse. Three Sizes of Earpieces These beyerdynamic in-ear headphones include interchangeable silicone earpieces in three sizes and a soft case. As an option, anatomically-shaped silicone earpieces can be ordered from the beyerdynamic website (sold separately).