High-Quality Bluetooth Ear Band

Hi, I'm looking to develop a CAD design for a construction-focused Bluetooth hearing protection product. The concept is a lightweight banded earplug system that sits around/behind the neck, similar to traditional banded hearing-protection plugs, but with Bluetooth audio built into it... (Budget: $1500 - $3000 AUD, Jobs: 3D Design, 3D Modelling, CAD / SolidWorks, Electrical Engineering, Electronics, PCB Layout, Product Design, Prototyping)