Samsung HM1950 Wireless Hands Free Bluetooth Headset - Black Leather The HM1950 delivers top-notch sound via its built-in noise reduction and echo cancellation technology, ensuring crystal clear call clarity, even in noisy environments You can even stream mono music and podcasts directly to the device from your Bluetooth-compatible media player or computer The inline rechargeable battery boasts 4 hours of talk time, 4 hours of music streaming and up to 150 hours of standby time per charge cycle, and with a dedicated on/off switch it's easy to conserve power until you need it The built-in voice prompts can even tell you when you need to recharge your headset