Jabra 100-99800902-40 Talk 45 Car Charger, Bluetooth Headset, 2 x omni-directional MEMS, 11 mm dynamic speaker, Frequency 100 Hz to 8 kHz, In-ear wearing style, Talk Up to 6 hours, Bluetooth 4.0, Wireless Up to 98 feet / 30 metres, Long-lasting calls, Powerful noise cancellation, Stream GPS and media. The Jabra Talk 45 Monaural Bluetooth Headset has HD Voice that automatically adjusts the volume to your environment, making sure that no matter where you are, you can hear above the noise around you.