DELL Pro Desktop Speakerphone - SP3022. Device type: Universal, Signal-to-Noise Ratio (SNR): 80 dB, Cable length: 0.85 m. Frequency range: 90 - 20000 Hz. Microphone frequency: 120 - 7000 Hz, Microphone direction type: Omnidirectional, Microphone sensitivity: 72 dB. Connectivity technology: Wired, USB connector type: USB Type-C. Width: 71 mm, Depth: 226 mm, Height: 58.7 mm