Affordability - Based on warranty, replacement parts cost and cost benefit.

Capability - Based on donning/doffing item, style, type, and settings, battery interoperability, PPE compatibility, impact resistance, low battery alarm/indicator, colored lens.

Deployability - Based on donning/doffing, setup time and detachable light.

Maintainability - Based on bulb replacement, battery recharge/ replacement requirements, in-house/ manufacturer repairs, replacement parts availability and routine maintenance requirements.

Usability - Based on battery life/usage time, adequate/quality light, ease of operation, environmental conditions, ergonomics and strap adjustment.