Model: Speak2 55

Connectivity: USB C or USB A, Bluetooth (for smartphone/tablet only)

Battery Life: Up to 12 hours 

Microphone: Digital MEMS, Microphone pick up range up to 2.3m | 7.55ft, 150Hz - 7000Hz frequency range

Controls: Power, Volume, Bluetooth, Mute, Call function keys

Compatibility: Unified Connections

Special Features: Four beamforming noise-cancelling microphones, Full-range 50mm speaker & wideband audio, IP64-rated protection from dust and water