Yealink

Yealink W90B. Frequency range: 1.8 - 1.9 GHz, Maximum range: 11811" (300 m), Supported network protocols: SNTP/NTP, VLAN, SIP v1, SIP v2, UDP/TCP/TLS, DHCP. Product color: White. Input voltage: 100 - 240 V

Yealink W80B. Frequency range: 1.8 - 1.9 GHz, Maximum range: 11811" (300 m), Supported network protocols: SNTP/NTP, VLAN, SIP v1, SIP v2, UDP/TCP/TLS, DHCP. Product color: White. Input voltage: 100 - 240 V. Dimensions (WxDxH): 5.12 x 3.94 x 0.988" (130 x 100 x 25.1 mm), Weight: 5.64 lbs (2.56 kg), Package width: 6.85" (174 mm)

Yealink MSpeech. Product color: Gray, Placement supported: Desk, Cable length: 78.7" (2 m). RMS rated power: 4 W, Frequency range: 100 - 8000 Hz, Sensitivity: 82 dB. Microphone sensitivity: -38 dB, Microphone frequency: 100 - 8000 Hz. Power source type: USB. Width: 5.91" (150 mm), Depth: 5.91" (150 mm), Height: 2.67" (67.7 mm)