| | Suunto | Timex |
Models | Advizor, Metron, X6HR | Ironman, Ironman 50 Lap/ 100 Lap |
Cost Range | $299-429 | $105-140 |
| Basic Features | | |
| | Continuous HR Display | All | All |
| Adjustable HR Range w/Alarm | All | All |
| Time In Target Zone | All | Ironman 50/100 lap |
| Average Heart Rate | All | Ironman 50/100 lap |
| Stop Watch | All | All |
| Time & Date | All | All |
| Memory/Recall/Logbook | All | Ironman 50/100 lap |
| Advanced Features | | |
| Recovery Rate Calculation | | |
| Remembers Lap/Splits w/HR | All | Ironman 50/100 lap |
| Automatic HR Range | | Ironman 50/100 lap |
| View HR as % of max HR | | |
| | User Replaceable Battery | | All |
| Smaller size option | | |
| | Graphing/Visual Tracking of HR | | |
| Calorie Counter | | |
| Fitness Calculators | | |
| Programmable Workouts | All | |
| Link to PC | X6HR | |
| | Personal Transmission Frequency | | |
| | Digital Transmission | | All |
| Specialty Features | Compass, Altimeter, Barometer |