Comfortable - fits to the geometry of the ear Secure - won't easily fall out during exercises and other active activities In-line remote to adjust volume, control the playback of music and video, and answer or end calls Volume control works on the latest iPhone via Apple's 3.5mm serial portocol inside the earphone jack Earphone works on all other audio devices (such as MP3/MP4 and Android devices).CompatibilityiPhone modelsiPhone 3GsiPhone 4iPhone 4siPhone 5iPhone 5ciPhone 5siPhone 6iPhone 6 PlusiPad modelsiPad (1st generation)iPad 2 (2nd generation)iPad (3rd generation)iPad with Retina displayiPad miniiPad mini 2iPad AiriPad Air 2iPad mini 3iPod modelsiPod classic 120GB (2008)iPod classic 160GB (2009)iPod nano 4th Generation (video)iPod nano 5th Generation (video camera)iPod nano 6th GenerationiPod nano 7th GenerationiPod shuffle 4th GenerationiPod touch 2nd GenerationiPod touch 3rd GenerationiPod touch 4th GenerationiPod touch 5th Generation 32GB/64GBiPod touch 5th Generation 16GB