Motorola CP110/200, CT250/450, GP300, GTX, P110, P122 , Ear Microphone with VOX Interface. (BDN6706) Quantity in Basket: None Code: BDN6706 Price: $471.60 Shipping Weight: 5.00 pounds Suggested List: $524.00 Quantity: Motorola (BDN6706) Ear Microphone with PTT & VOX Interface Module (External VOX Included - Selectable Switch for PTT or VOX) For CP-110, CP-150, CP-200, CT250, CT450, GP300, GTX, P110, P1225, SP50 and SP50+.