The B250-XT's Xtreme Noise Suppression technology effectively eliminates background sounds in noisy environments.The headset sits securely on your head - no more sore ears from over-the-ear style headsets! Rugged-built for life on the road.Professional grade durability and comfort and additional functionality such as mute and volume adjustment. Call answer/call end volume mute and pairing functions conveniently located on the headset. Xtreme Noise Suppression eliminates background noises. 16+ hours talk time – talk all day without recharging. Up to 66 ft range. A wide range of speaker volume adjustments ensures that you can hear the other person on the phone. Hearing aid friendly. Indicator lights that can be turned on and off. Over-the-head headband ensures stable fit. Concave ear cushion for comfort and improved sound. Simple to use multifunction button. Microphone mute volume and pairing functions. Flexible "gooseneck" microphone boom adjusts precisely and easily to keep it where you want it. Convenient left or right side microphone placement. Compatible with any Bluetooth cell phone or computer. Works with Verizon Sprint Nextel Alltel and U.S. Cellular. This Bundle Also Includes: Blue Parrott 202846 B250XT Replacement Foam Mic and Ear Cushions.