| Smart/Talk | Tech/Talk | Tech/Talk ECU | |
| Direct Select | Yes | Yes | Yes |
| Message Cells | 8 | 8 | 8 |
| Levels | 6 per Flash | 6,8,12 | 6 |
| Sequenced Messages | |||
| Scanning | |||
| Auditory Prompts | |||
| Environmental Controls | IR & RF | ||
| Total Recording Time | up to 8.8 min. | up to 14.4 min. | up to 7.2 min. |
| Smart Overlay System | Yes | ||
| External Flash | Yes | ||
| Rechargeable Battery | Yes | optional | Yes |
| Overall Size | 13.5x8x2 | 13.5x8x3 | 13.5x8x3 |
| Message Cell Dimensions | 2.75" | 2.75" | 2.75" |
| Weight | 2 lb. | 2.5 lb. | 4 lb. |
| Price | $775 | $435 - $1,168 | $875 - $1,235 |