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

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

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

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

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

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