Fetta Wired On Ear Headphones with 3.5mm Audio Cable Wireless Stereo Bluetooth Headphones with Mic Protable Headsets Earphones for Smartphones,PC,Laptop,MP3 Player and More (Black) Bluetooth Technology: Advanced technology for clear handsfree calling and listening to music in noisy environments Can be used both wired (via 3.5mm plug) and wireless Foldable headphones for easy storage and transport Comfortable wearing:Custom fit supra-aural soft earmuffs,artificial protein leather of earmuffs simulated to human skin texture, ensure long lasting comfort in various rugged circumstances Support FM radio function.Built in micro SD/TF card slot.Enjoying your favorite music or radio station via so many source