
Custom wearable electronics must balance comfort, acoustics, RF, battery, controls, materials and manufacturability. This engineering guide explains how to move from form-factor decisions through prototypes, EVT, DVT, PVT and production.

EVT, DVT and PVT are decision gates, not just prototype rounds. This guide explains what each phase should prove, which deliverables buyers should expect, how build quantities are determined and which failures should stop progression.