Suunto T6C Review

Suunto T6C BLACK

Well it has been a month of intensive use on the T6C for me and I thought I would write a short review on it … it’s been about 30 hours of exercise so sweaty use mainly running and cycling. Most of this review is based on previous HRM I have owned and used … Polar 710 and a 625x , Garmin 301 and 405GPS


Well the Suunto is small and neat – it nearly looks like a normal digital watch. It is comfortable on the wrist and light. It is only 55g  and is waterproof to 100m. The cutouts on the strap sit comfortably on the wrist bones to when running. I used to find the Garmin a bit clunky and sharp edged – solved for me by running with a thin wrist sweatband to stop it rubbing banging too much. The Suunto is easily on par with the Polars and I forget it is there running until the auto lap beeps me to check my pace.


The features are great – it obviously does heart rate with a belt and has a barometer/ altimeter built in which is much better than the GPS fix the Garmin used to try. I have to confess now that I have a Suunto Core too so the menu system is very straight forward to me and I didn’t really need to consult the manual to find my way around. Not sure if the lovely Finnish watch is easy for everyone.


The best part of the Suunto and the movescount software is the EPOC and Training Effect information. They are linked but here is a brief blurb explanation:

EPOC with pace change halfway through

Excess Post-exercise Oxygen Consumption

EPOC is the additional amount of oxygen the body needs to recover from exercise. Previously only measurable in sports laboratories, EPOC is a scientific indicator for the accumulated training load of each training session. Measuring your EPOC makes it possible to objectively gauge whether the training session was sufficient to improve your fitness level. EPOC is also used to calculate your Training Effect.

Training Effect: Any physical trainer will tell you that in order to maximize the impact of your workouts you need to train hard enough to make a difference, but not so hard that you injure yourself. Without a personal trainer to advise you, an optimal training range is exceedingly difficult to figure out because your target training zone will change as your fitness level improves. Suunto’s  Training Effect feature tells you whether you’re training too little, too hard or staying within the zones for optimal performance. Training Effect uses a simple 1-to-5 scale to display how intense your workout is based on your current fitness level. And with alarms, you’ll know as soon as you hit your limit. If for example you do a hard training at level 4 it suggests you do at least 2 sessions or recovery at 1 or 2 to prevent overtraining.

Training Effect is an accurate measurement of how hard you have trained. To calculate your personal Training Effect, Suunto heart rate monitors user data from your personal fitness profile and combines it with an analysis of your physiological progress in real time. Your heart rate monitor then formulates your Training Effect, presented as a number on a scale from 1-5.

The other remaining body parameters provided by the analysis software of Suunto t6 are energy consumption, ventilation, oxygen consumption and respiratory rate.


The T6C uses the Ant Pod system – I have a bike Pod as well as a GPS Pod. One of the nicest things is that you can set speed on the watch to display individually for these pods. I have the GPS set to min/km for running (pace) and the bike one is set to km/h (speed)

The downside:


Firstly memory
I thought this Suunto would be a bit like the Core in that once memory got full the old entries in the logbook were overwritten (unless they were protected. With the T6C this is not the case – the watch still records total duration but stos recording exact parameters. When that happens you get an entry like this on Movescount

Memory Full - the result

So halfway thought a cycle and just as I started doing repetitions … a wee bit of a pain but lesson learnt. I reckon that recording all parameters ever 2sec (speed, HR, altitude, gps) will give you around a 4hr session recorded. Switch to /10sec if doing a longer race.


I have scratched the face of the watch so wrote to Suunto to see if there is some fancy scratch remover and I got this reply …..

Dear Sir,

Thank you for contacting Suunto.

The material used for the display in the t6/t6c models is mineral crystal glass. While mineral crystal glass is scratch resistant, this does not mean that the display is scratch proof and if used in rough conditions like mountain climbing we would recommend use of a display shield.

Unfortunately there is no product that can remove the scratches, but it is possible to replace the display at our service center.

With best regards,
Suunto Helpdesk

Author: richdirector

07966 910358

6 thoughts on “Suunto T6C Review”

  1. Hmm… did you read the manual? there’s an instruction where to get their so-called scratch remover product of theirs.

    1. I emailed Suunto and they said to use scratch guard – like I said bought SH for cheap and only cosmetic …. wish Suunto would shift to Ant+ so I can link to some Garmin stuff I have as well

Leave a Reply

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s