Poly BACKBEAT-FIT-3150

LISTEN TIME Up to 8 hours CHARGING CASE BATTERY Up to 16 hours ROAMING RANGE Up to 98 ft/30 m BATTERY CAPACITY (EARBUDS) 90 mAh BATTERY CAPACITY (CHARGING TYPE) 740 mAh BATTERY TYPE Rechargeable, non-replaceable lithium ion polymer CHARGE TIME Up to 2 hours for full charge QUICK CHARGE Up to 1.5 hours of listening with a 15-minute quick charge BLUETOOTH TECHNOLOGY Bluetooth 5.0 Headset/Hands-Free Profile HSP 1.2 and HFP 1.7 AUDIO PROFILES Advanced Audio Distribution Profile (A2DP) 1.3, AVRCP 1.6 RECEIVE FREQUENCY RESPONSE 20-20,000 Hz MICROPHONE AND TECHNOLOGY MEMS microphone with DSP SPEAKER DRIVER SIZE 13.5 mm MOISTURE PROTECTION Sweatproof and IP57-rated waterproof. Waterproof in fresh water up to 1 m (3.28ft) for 30 minutes. However, Bluetooth does not transmit under water. WEIGHT 13 g (each earbud), 89 g (charging case without earbuds) CALL CONTROLS Call answer/end, volume +/- MEDIA CONTROLS Play, pause, track forward/back, activate virtual personal assistant VOICE AND OTHER ALERT