Big Fat Shop B730 Black + Blue Bluetooth Headphone Supports Wireless Music Streaming and Hands-free Calling Sd MMC Card Wireless Headphones with Perfect Fit and Extended Battery Fm Raido Function 8 Hours Playing Time Use hanging design with stereo speaker Support MP3 WMA WAV ASS APE format songs Support TF .FM.Card, Bluetooth with mono or dual output,it can support music function 300 built-in lithium battery,it can play 7-8 hours continuous buy 4pcs then free shipping