I also just upgraded to the Fusion T6c and it's a great improvement. It has the same amount of memory but if I'm going to run more than 60 miles I can turn off the R-R recording and I can record for more than 100 miles or 24 hours. However your Training Manager will not count the workout correctly so don't forget to turn it back on.

I've used other sports watches with hr monitors before, but the t6c is simply a notch above the rest. I have used mine everyday for about 1.5 years now and have logged every training session and race - from monitoring and analysing your breathing, VO2 max, calories, hr, altitude, speed, distance, etc, to programming or adjusting the display on the move to see stats & readings - it simply blows your mind! One the most useful bits of info provided is the 1-5 scale on the right hand side of the display - this will tell you how hard you are exercising relative to your level of fitness - simply put it is another tool other than your heart rate to judge & montitor how hard you should be pushing it - because often with endurance events if you go out to hard or fast you will blow later! This PC on wrist helps you understand your body, when your bodies immune system is down, this will pick it up and you will notice it in the readings that your body is reacting differently to normal - it helps to nail flu & the like at the onset. Only draw-back is that it records a limited amount info (I think around 12 hours of data capturing) before you need to download and free-up memory space - this isn't normally a problem as it isn't often that I am away from my pc for longer than 12 hours of training. When participating in multi-stage endurance events then this becomes a issue - simple way around it is to record the data manually before clearing up memory space. I've used this on trekks, surfski & mtb races and it has never failed me.

The T6c has some serious upgrades from the previous model. The new comfort belt really is much more comfy than the stiff plastic one from before. I've really been liking the customizable screens, there are two of them. You can choose what info you'd like displayed and in what order. It's one of the only heart rate monitors to give altitude. Also nice to have cadence and training effect on the new version. definitely one of the best watches out there to take you across all your activities!

I've been used a Suunto T6 for 2 years and just upgraded to the T6C. It was a great product before, and they've really made some nice usability features. This device is literally a sports lab on your wrist. If you want to track your workout data this is the ultimate. If you only want casual monitoring of HR, don't spend the premium. But if you are a gadget lover, and want a comfortable and attractive watch with many many features...this is the one for you! I love the programmability of the display...you can pick the stats you want to see, in the order you want to see them...when you are cycling or working out you don't want to fiddle, you just want the data there at a glance. All the data is available after the workout on the watch...the old model required you to dump to a PC to get some data, such as calories burned...but this gives you everything. I have not loaded the new training software on my PC yet, so I can't comment on the changes...the old software is good though...I've had much more success and remained motivated in workouts by tracking my data....sets up your own personal competition...some like that, others find it the opposite of why they get out and cycle...I understand both sides...and don't always measure everything...but when you want to know how you are doing...the T6c will pile on the info.

I LOVE my Suunto t6c! I bought this heart rate monitor about a month ago and I'm completely addicted to it. The heart strap is very confortable and was easy to adjust to my small torso size. The watch and belt synched right away - no problems. The watch face is large, but not too large for my small wrist and I feel comfortable wearing it to my office.

I love all of the features, ironically I've found that I love looking at calories burned. Sorta silly, as I didn't buy it for weight loss, but seeing 3000 calories burned after a long trail training run gives me a cheap thrill.

My only disppointment is that I can't use the software that comes with it on my Mac (more disappointed with Suunto the company, than the watch).

I have had great experience with Suunto products over many years so I decided to go with Suunto when I found out that I needed a heart monitor. I ignored the user reviews on the Suunto site that warned about clasp connection/communication problems on the comfort belt. I almost immediately discovered that communication from the belt to the watch would come and go without warning. Jiggling the clasp frequently restored communication. I purchased a new belt directly from Suunto and the original belt is going back in for repair/replacement. The problem seems to be that the clasps contain contacts that activate the belt. The clasps turn the belt on and off. If either clasp(right or left) has any wobble in it at all then you are likely going to have problems. The “new” belt looks the same but seems to have better tolerances in the clasp connection. Otherwise, everything else is great. I am especially impressed with the software and my cardiologist was quite impressed with the reports. I wear the device for 8-10 hours per day and have had no comfort issues. Electrode jell is cheap and a good way to insure contact for many hours.

Great watch. I had the Suunto x6-HRM in the past (daughter threw it overboard) and this watch's data feed seems much more accurate. While I liked the look of the other watch better this watch is significantly lighter and more comfortable. No problems with the chest strap or with it cutting out mid workout.

Only drawback is difficulty taking advantage of all the data analysis. It is easy to get the setup going and to download the info to a computer but I haven't had the time to really analyze the information or use suuntosport.com.

Can't wait to add the gps and bike pods.

I take my Suunto T6 just about anywhere I might be pushing the limit.

Mountaineering - I like tough hikes up on Mount Rainier. While climbing the Inter Glacier with a 39lb day pack (conditioning hike) I was monitoring my heart rate to learn "that feel" to maximize my climb while and not over do it. After 2 hours going straight up a 30-40 degree slope my heart rate started dropping even though the effort remained the same. I knew something was wrong then and stopped the climb. Post analysis: Lost 3.7lbs of water. The drop was attributed to not enough hydration. Even though I "thought" I was drinking enough. The visual indicator help save me from something more serious.

Working out - My Suunto and training manager helps direct my gym workout and building endurance safely. It also helps me compare my bike rides versus the gym workouts. It is all about balance and my Suunto shows the facts not head talk.

Using - It took me just a short time to learn the watch and using the Training Manager. Worth every penny.

This watch is pretty sweet. Altitude is super finicky, but everything else seems to work great. The only other problem is i sometimes get different readings between the watch and the software. Otherwise, i highly recommend it.