Bluestream's BS101HPBT Bluetooth Stereo Headphones are compatible with any Bluetooth device as well as devices with a 3.5mm headphone jack. Compatibility includes: all iPhones, iPods, smartphones, iPads, tablets, MP3 Players, computers, and more. These headphones feature a built-in rechargeable battery for hours of listening time. A built-in microSD card slot allows for listening to MP3 files from a microSD card. Also featuring an FM tuner, a built-in microphone for safe and easy hands-free calling, as well as integrated controls for changing music tracks, starting and stopping playback, as well as answering/ending phone calls.