Motorola H721 Bluetooth Wireless Headset Improved Audio - Audio is 25% clearer than previous boot flip design headsets. Enhanced noise cancellation technology reduces background noises automatically. Volume automatically adjusts as the background noise gets louder. Multipoint Technology - Make and receive calls from two phones using one headset. Works effortlessly with EasyPair technology for easy setup. Different LED colors let you know which phone is receiving an incoming call. Convenient Battery Check - Built-in battery meter helps you prevent unexpected battery run outs. Simply press both volume buttons to display tri-color LED that indicates remaining talk time. Three levels of color indicate your battery's capacity. Talk Time - Up to 6.5 hours Standby Time - Over 8 days