Enjoy high definition calls with an Omni-directional microphone and 11mm Dynamic speaker that are optimized for high-quality, crystal-clear conversations. Talk 25 gets the most out of your media, letting your wirelessly stream GPS directions, music and podcasts from your mobile phone. It also comes with voice guidance, notifying you when you need to recharge the device, and giving updates on your connection status. With up to 8 hours of calls and up to 10 days of standby time, make reliable Bluetooth wireless calls throughout the day on a single charge. With the power Nap feature, talk 25 extends battery power by turning itself off if disconnected from a device for a full hour.