Connections: Bluetooth, USB Bluetooth: 4.2, Class 1 Wander Range: up to 100 ft Talk Time: up to 15 hrs Battery Time: up to 30 hrs (with noise cancellation activated) Charging Time: 2.5 hrs Headset Controls: volume up/down Microphone Type: noise cancelling Speaker Frequency Range: 20 Hz – 20 kHz Optimized for Microsoft Business environments
