POLY

Dynamic EQ for telephony and music ,Active noise canceling (ANC), 127 dB ±1.5 dB, Four omni-directional microphones, -26 dBFS +/- 3dB, 100 Hz – 10 KHz

Six layers of WindSmart technology, PC wideband and mobile wideband: up to 6,800 Hz; echo cancellation, proprietary DSP, A2DP, Up to 7 hrs., up to 9 d

Dual-paired four mic DSP noise-canceling technology, dual-mode active noise canceling (ANC) technology, mobile wideband compatibility, A2DP, AVRCP, HF

Dual-paired four mic DSP noise-canceling technology, dual-mode active noise canceling (ANC) technology, mobile wideband compatibility, A2DP, AVRCP, HF

Continuous talk (noise cancelling ON): up to 16 hrs ¦ Continuous talk (noise cancelling OFF): up to 19 hrs ¦ Continuous hearing (noise cancelling ON):

Fullband stereo media audio 20 Hz-20 kHz; Wideband stereo telephony 100 Hz-6.8 kHz, Up to 13 hours talk, up to 50 hours standby time, Line of sight:

Continuous talk (noise cancelling ON): up to 16 hrs ¦ Continuous talk (noise cancelling OFF): up to 19 hrs ¦ Continuous hearing (noise cancelling ON):

Active noise canceling technology, wideband (voice), hi-fi stereo, A 2 D P, D S P, Battery Capacity: 350 mAH Battery Type: lithium ion Listening Tim

0.02 Pounds

Six layers of WindSmart technology, PC wideband and mobile wideband: up to 6,800 Hz; echo cancellation, proprietary DSP, A2DP, Up to 7 hrs., up to 9 d

0.02 Pounds

Active noise canceling technology, wideband (voice), hi-fi stereo, A 2 D P, D S P, Talk time: Up to 12 hours (10 ANC on) Listening time: Up to 15 hour

Dual-paired four mic DSP noise-canceling technology, dual-mode active noise canceling (ANC) technology, mobile wideband compatibility, A2DP, AVRCP, HF

Dual-paired four mic DSP noise-canceling technology, dual-mode active noise canceling (ANC) technology, mobile wideband compatibility, A2DP, AVRCP, HF

Fullband stereo media audio 20 Hz-20 kHz; Wideband stereo telephony 100 Hz-6.8 kHz, Up to 13 hours talk, up to 50 hours standby time, Line of sight: