Motorola (Otto) V4-10004, behind the head, dual speaker, heavy duty, standard PTT Quantity in Basket: None Code: V410004 Price: $306.97 Shipping Weight: 5.00 pounds Quantity: Motorola (Otto) V4-10004, behind the head. Certified noise reduction of 24dB. Flexible, noise-canceling, boom microphone with replaceable windscreen. Comfortable, cloth-covered ear seals. For SP10, SP21, CP100, PR400. List price $341.08