Poly BACKBEAT-PRO-5100

LISTEN/TALK/STANDBY TIME Up to 6.5 hours listen time, Up to 4 hours talk time ROAMING RANGE Up to 33 feet/10 meters BATTERY CAPACITY 60 mAh (earbuds), 440 mAh (charging case) BATTERY TYPE Rechargeable, non-replaceable lithium ion polymer CHARGE TIME Up to 2 hours for full charge, Up to 3 hours for full charge of earbuds and charging case QUICK CHARGE Up to 1 hour of listening with a 10-minute quick charge BLUETOOTH TECHNOLOGY Bluetooth 5.0, Hands-Free Profile HFP 1.7 AUDIO PROFILES A2DP 1.3.1, AVRCP 1.6 RECEIVE FREQUENCY RESPONSE 20 - 20,000 Hz MICROPHONE AND TECHNOLOGY Four microphones noise-canceling digital signal processing (DSP) SPEAKER DRIVER SIZE 5.8 mm MOISTURE PROTECTION Sweat-resistant and IPX4 water-resistant WEIGHT 5.8 g (each earbud), 38.6 g (charging case without earbuds) CALL CONTROLS Call answer/end, mute, volume +/- MEDIA CONTROLS Play, pause, track forward/back, activate virtual personal asisstant VOICE AND OTHER ALERTS Enhanced voice alerts announce talk time remaini