This bluetooth headset consistently cancelled out background noise, provided the longest run time, and was the most comfortable to wear, earning it The Best rating by the Hammacher Schlemmer Institute. In calls placed from inside an office, car, and train, this model's dual-microphone noise cancellation technology enabled conversations completely free of static, providing clear, crisp sound, unlike other models that produced static-ridden calls that sounded like they came from a tunnel. Its rechargeable battery provided six hours of run time--the longest of any model tested--while providing up to five days of stand-by time, requiring one hour to fully recharge from its AC adapter. The most comfortable, it adjusted easily to fit over either ear, never falling off during any tests. One panelist commented the headset "fit perfectly right out of the gate" while another noted it "doesn't interfere with my glasses." Easy to use, it provides simple voice alerts to notify its owner when in pairing mode, how much talk time remains, and when powering on/off. (8 oz.)