The New Jawbone PRIME Bluetooth Headset is finally here! It's even better than the original and eliminates real world background noise from your phone calls by detecting when you are speaking and precisely separating your speech from noises with its unique NoiseAssassin 2.0 technology. The latest and greatest NoiseAssassin 2.0 delivers an order of magnitude improvement in the noisiest environments extracting even more noise while keeping the user's voice natural. its strong background in Digital Signal Processing (DSP) techniques reduces the impact of wind while you are on speech. Moreover, Its Acoustic Voice Activity Detector (AVAD) provides a fail-safe mechanism provides better performance when the headset doesn't touch your face. It can give up to 4.5 hours of talk time or more than 8 days of standby time.