Wireless Expansion Mic CPW65-DECT-Duo

Optimal HD voice with 3 built-in microphones
Full duplex technology
Echo cancellation
10-foot (3-meter) 360° voice pickup
Up to 20-meter connection distance with CP965
11-day standby time and 13-hour talk time
Intuitive capacitive mute buttons
360° nondirectional charging on charger cradle
DECT Technology