This is an Astatic microphone, model 331, with its original box. The item is in good, used condition. The Model 331 features a frequency response from 300-7000hz and a momentary on switch. This set does not include the hang-up bracket. The shipping cost reflects the package size needed to ship the original box, as well. I have a mobile electronics installation business and am selling off some excess inventory. Please feel free to send a message if you have further questions about any of my items, or a question about your specific mobile electronics needs. Thanks for looking!