Product-type segmentation differentiates disposable and reusable electrodes. Disposable TENS electrodes (โ70 % of unit sales) target acute-care hospitals and pain clinics that prioritize cross-infection control; their lower per-piece price is offset by high turnover, making volume commitments the primary revenue lever. Reusable electrodes (โ30 % of sales) embed silver-silver chloride layers that withstand 30โ50 cycles, translating into lower cost-per-use for chronic patients and rehab centers. Within each camp, hydrogel adhesion levelโstandard (80โ120 uses) versus long-life (>150 uses)โfine-tunes pricing tiers. Additionally, form factor splits into square, round, oval, and strip geometries, with square 5 ร 5 cm SKUs accounting for โ55 % of SKUs because they align with most dermatomes, while oval designs capture โ20 %, favored for joint contours. Carbon film thickness (2 mil vs 4 mil) is a final, albeit technical, differentiator that influences impedance and is quietly used by distributors to upsell within commodity markets.