Marware iPod nano Sidewinder, Black Compatible with Bluetooth 1.2 or 1.1 enabled mobile phones, PDAs, PCs and more Enhanced audio performance Up to eight hours of talk time or 150 hours of standby time from a single charge Bluetooth 1.2 support provide quicker pairing, better audio with less dropped calls and reduced interference from other devices Call button to control call start and end, hold and toggle between calls