BumbleBee Noise Reduction Bluetooth Headset - Black Dual microphones together with Digital Signal Processing (DSP) technology reduces noise, wind and echo Maximum audio performance with speaker volume control Up to 4.5 hours of talk time and 120 hours of standby time Bluetooth specification V2.1+EDR class 2 Package also includes wall charger and USB cable and we offer a 1 year limited warranty on this product