4 in 1 Multifunctional stereo Bluetooth Headphone: Wireless Stereo Bluetooth + Card MP3 player + FM Radio + Wired Headset function.
3.5mm audio jack, provides a simple wired connection of a variety of music players (Such as, MP3 / MP4, etc) without Bluetooth function.
Foldable Design: Headphones feature a on-ear foldable design, save more space when on storage. The headphones are extendable to fit many sizes of heads. headphones are very comfortable and fit head very nicely.