... Rechargeable battery 4.Has a mini SD card slot Headset player Features:Bluetooth stereo headset lets you listen to music or phone calls wirelesslyHigh ... of a buttonLightweight,comfortable design for all-day listeningCompatible with bluetooth enable devices,such as iphone,ipad,most computers,cellphoneFrequency ... free to contact us any time 2012 New design colorful bluetooth Stereo Audio Headset player