Needing more than the on-the-shoulder radio mic, I interviewed users and then developed form studies for fit and functionality. Once I found the right shape, I did a quick napkin sketch before moving to CAD over the engineering package. The end product became an integrated piece of equipment that was sold with every radio from that point forward.
Quick model ideation exercise
Form down select
Top 3 volumes from study
Human factors studies
Human factors studies
Functionality study
Model development
Quick sketch leading to final product