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Our Review of the Suunto t4, t4c and t4d
t4 & t4c Series On Sale for $129.99- $189.99! Regularly priced at $219.99. Save up to $90 (41%)
Key differences between the Suunto t4 series watches:
- Suunto t4: Includes the Standard Heart Rate Belt and automatically deletes logs once the watch reaches its 15-log memory capacity.
- Suunto t4c: Includes the Comfort Heart Rate Belt that provides interface free heart rate monitoring, and allows you to select which workout logs to delete when the watch reaches its 15-log memory capacity.
- Suunto t4d: Includes the Dual Heart Rate Belt that provides interface free heart rate monitoring and coded analog for data transmission with cardio gym equipment.
The Suunto t4 series monitors your heart rate, caloric burn, and provides detailed information about the progression and effects of your training. Plus, helps whip you into shape with the Suunto Coach, which lets you know when and how intensely to work out.
Turn your Suunto t4c or t4d into a GPS Watch with a Suunto GPS POD. The GPS POD tracks speed and distance across a wide variety of outdoor activities, including hiking and cycling.
SUUNTO t4 RANKS #2 IN U.S. IN OUTSIDE MAGAZINE'S "O LIST"

Standout Features:
- The women's t4 series watches feature attractive graphics, unique detailing, and a softer, slimmer strap for an improved fit.
- Suunto Coach acts as your personal trainer.
- Training Effect monitors your aerobic conditioning level.
- 15 logs of memory. Save all of your logs, or just selected ones.
- Measures real time calories burned.
- Tracks speed and distance when paired with Suunto POD (Peripheral Observation Device).
What Does the t4c and t4d do?
Training Effect: Suunto's exclusive Training Effect feature tells you whether you're training too little, too hard or staying within the zones for optimal performance. Training Effect monitors your heartbeat by heartbeat performance and uses a simple 1-to-5 scale to display the improvement of your aerobic conditioning. And with alarms, you know as soon as you hit the next intensity level.
Suunto Coach: Suunto Coach is designed for athletes who are very serious about their training, but may not have a coach or personal trainer available to monitor and make suggestions about adjustments in their workout routine. Suunto Coach software uses American College of Sports Medicine (ACSM) guidelines to plan the optimal intensity and duration of your next workout as far as 5 days ahead. Your Suunto t4c or t4d adapts to your performance, maintaining an up-to-date plan of how to best utilize your next trip to the gym, trails, track, slopes, or whatever your preferred activity. If your workout exertion was above or below the optimal level, Suunto Coach will adjust the suggested intensity and duration of your next workout to compensate for the difference.
Interference Free Heart Rate Monitoring: Both the Comfort Heart Rate Belt and the Dual Heart Rate Belt provide interference free HR monitoring anywhere and everywhere, remedying problems associated with previous HR monitors that were affected by power lines outside or electronic equipment inside the gym, making the t4c and the t4d valuable investments for those who love to train outdoors as well as indoors.
The Dual Heart Rate Belt also features Coded Analog to allow data transmission with most popular cardio gym equipment.
Activity Class: The Activity Class rates your current activity levels so that your Suunto watch knows your baseline activity level.
15 Log Memory: Record a personal training log of statistical data that reflects the progression of your aerobic health and performance capacity. And choose whether to save all of your logs or just select certain ones.
Track Data on Your PC (with the PC POD): Using the PC POD, keep detailed records of your workouts, heart rate, training effect, and calories burned. The PC POD comes with the Suunto Training Manager Lite software.
Track Speed and Distance (with a Suunto POD): With a POD for runners, bicyclers and adventurers, your Suunto t4 watches track speed and distance during workouts. Want to purchase your t4c or t4d with a POD? Choose a compatible training pack, including the Suunto Cycling Pack, Suunto Running Pack, and the GPS enabled Multisport Pack.
Who is the Suunto t4c and t4d best for?
Runners, triathletes, spinners, mountain bikers, and anyone getting into shape benefit from the Suunto t4 series. The Suunto t4c and t4d watches maximize your fitness routine by providing up to the second information on your workouts. And with handy features like a lock button to prevent pressing the wrong button during your workout, they both transform your training.
With the Dual Heart Rate Belt, the t4d features dual technologies to not only provide ANT interface-free HR monitoring like the t4c's Comfort Heart Rate Belt, but also Coded Analog to allow data transmission with most popular cardio gym equipment.
Comparison: For those who don't need the personal training benefits of the Suunto Coach, the Suunto t3c and t3d have all the great training, heart rate, and calorie monitoring features of the t4c and t4d, only without the Suunto Coach.
Note: If you own a Suunto t4 and updated your heart rate monitor belt to the Comfort Heart Rate Belt, instructions for replacing the comfort belt's battery can be found on page 41 of the t4c instruction manual, available under the "Additional Info" tab.
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| Suunto t-series | t1 | t1c | t3c | t4c | t6c |
|---|---|---|---|---|---|
| *Sold Separately | |||||
| Heart Rate | yes | yes | yes | yes | yes |
| Counts Calories | yes | yes | yes | yes | yes |
| # of Logs | 1 | 1 | 15 | 15 | 30 |
| Training Effect | no | no | yes | yes | yes |
| Inter-ference Free | no | yes | yes | yes | yes |
| Speed & Distance Compatibility | no | no | yes* | yes* | yes* |
| PC Interface | no | no | yes* | yes* | yes |
| Suunto Coach | no | no | no | yes | no |
| Altimeter | no | no | no | no | yes |
| Daily Alarms | 1 | 1 | 1 | 1 | 3 |

Click here to download instruction manual. (Adobe Reader required)
Related Categories:
Suunto Watch Face Specs(cm/mm)
- Thickness
- 1.32
- Visible LCD Area
- 2.57
- Total Display Area
- 3.58
- Casing Diameter
- 4.22
Time
- 12/24 hour clock
- Calendar clock
- 1 daily alarms
- Dual time
Heart Rate
- Memory Capacity: 15 logs
- Real time calories
- Training Effect
- HR limits
- ANT - digital coded heartrate / speed signals
- Coded Analog data transmission (t4d)
- Average HR shown in real time
Chronograph
- Max number of split times in memory: 50
- Timers: interval, warm-up, countdown
- Stopwatch
Power
- Low battery warning
- User replaceable battery
Other Features
- Dot-matrix display
- Menu-based user interface
- Water resistance: 30m/100ft
- Selectable metric/imperial units
- Compatible with PODS
- Suunto Coach - personal training program
Suunto Watch Face Specs(cm)
- Thickness: 1.32
- Visible LCD Area: 2.57
- Total Display Area: 3.58
- Casing Diameter: 4.22
Suunto t4, t4c and t4d Reviews
Good Watch, Bad Strap
I've more then got my money worth
I should explain how I believe this watch works and am pretty sure of myself. Let say you have a 1:15 workout with a TE of 4.0 sounds pretty easy and some days it is, but as you get going on some days when you're good and fit the watch knows after a few minutes of exercising and adjusts your workout and makes you work harder, cause it knows you can handle it. The opposite is true for days when you're a little under the weather. As you get going I have a feeling it's measuring my stress level and adjusts to make my workout easier, cause it somehow knows I'm tired or ill. I can't wait for their next watch.
I'd like to see Suunto write an app for the iPhone.
Useless!
Suunto T4c
Graetest Birthday Gift!
Great features but very poor screen
Training effect?
Comments from The Staff:
Suunto watches are a bit technical, but that's why we are here to help. Please call us at 800-891-8490 and we would be glad to help you out.
GREAT WATCH!
Suunto t4c Nice
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