Vertex/Standard V4-10405, Behind-the-head, dual speaker, heavy duty, standard PTT Quantity in Basket: None Code: V410405 Price: $298.58 Shipping Weight: 5.00 pounds Suggested List: $331.76 Quantity: Vertex/Standard V4-10405, Behind-the-head. Certified noise reduction of 24dB. Flexible, noise-canceling, boom microphone with replaceable windscreen. Comfortable, cloth-covered ear seals. For VX-210, VX-400, VX-131, VX-160, VX-180.