Affordability - Based on cost per unit, purchase options, customer support and warranty.

Capability - Based on translation accuracy, battery and charging, microphone input options, unit configuration, recording archive, data storage, external interfaces, device speed and language output options.

Deployability - Based on ruggedness, environmental factors and external devices.

Maintainability - Based on ease of agency support and ease of maintenance.

Usability - Based on intuitive Capabilities, hands-free, physical attributes, speed of access to modules/phrases, articulation of speech, volume and clarity, input validation, ambient noise reduction, training and set up time