Polycom Soundstation Wireless Lapel Microphone using Frequency "A" at 171.905Mhz.  (If you need a 2nd lapel Mic, see Polcyom Frequency F wireless Mic) Retail Price $499.00

Key Features:

• Range - 50-200ft
• VHF band
• 2 channel
• On/Off/Mute buttons
• Transmitter powered by 1 - 9V battery
• Installs into RCA port of Polycom SoundStation2 EX and Polycom Soundstation 2W EX, and Polycom VTX 1000 Conference phones.
• Also will work with the older Polycom Soundstation EX and Soundstation Premier models.
• Frequency = 171.905MHz
• part# 2200-00699-001