This headphones feature the international bluetooth 4.0 csr chipset, it can create hd audio and a wide frequency response from 20hz to 20khz, low power consumption, superior compatibility (mobile phones, tablet pcs, notebooks; all bluetooth enabled devices & a 3.5mm audio jack).
> support tf card play & fm radio function: the headband headphone has a tf card slot, you can insert a micro-sd card full of all your songs. Enjoy your favourite radio stations anywhere, anytime with the fm function. (note: fm radio may won't work in some countries).
> high fidelity stereo sound effect: 40mm ultra-large dynamic alloy speaker drivers, tuned by a professional team and high fidelity stereo surround sound, enjoy the wireless high-quality music.
> smart handsfree talking: (built-in concealed high definition sensitive microphone), the headband headphone enables phone call interruptions when you're listening to music with its "answer incoming ph