Calls made clear Enjoy clear calls with a high-quality microphone and speaker that are optimised to make conversations clear.   Stream GPS and media Talk 15 gets the most out of your media, allowing you to wirelessly stream GPS directions, music and podcasts from your mobile phone.   Long-lasting wireless calls With up to 6 hours of calls and up to 14 days of standby time, make reliable Bluetooth wireless calls throughout the day on a single charge.   HD Voice for high-definition sound quality Crystal clear call quality