Jabra Evolve 65 TE UC Stereo Wireless Bluetooth Headset - Includes Link 380A Dongle - Speaker Size: 28mm - Frequency Range: 150Hz - 6800Hz - On-Ear Headband - Connectivity: Bluetooth, USB - Operating Range: Up to 30m - Battery Time: Up to 16 Hours Talk-Time, Up to 15 days Standby Time - Charge Time: Max. 120 minutes - 6699-839-409