s="h3color tiny">This review is from: TomTom Runner Cardio (Black) (Electronics)

The manufacturer commented on the review belowSee comments Check out the reviews on DCRainmakers site to see posts from others with similar complaints.On six total runs, the heart rate monitor only worked twice. Heart rate monitoring was working up to the point I would start sweating...usually mile 2-3, at which point it would stop working. Sometimes it would come back when I repositioned/wiped the sweat away, but it usually didn't. I really wanted this watch to work. The idea of not having to wear a chest HR strap is great, but this watch isn't the answer. Perhaps a firmware/software update will be released to fix the HR problems, but until then, avoid this watch.I contacted TomTom's support page and got no response after two days. A watch that doesn't work as advertised and a lack of support equals me returning this watch and going with another proven brand. Let me know when you work out the bugs because I really want this to work.(And TomTom, don't tell me it's my fault. I've tried the inside of...Read more

I bought a TomTom MultiSport Cardio Performance Bundle to compare side-by-side with my Garmin Forerunner 620. Over the past two weeks, I did several 10K runs indoors and outdoors with both watches on.These are the highlights of my comparison:All the functions of the TomTom Cardio worked just as advertised. This included all the in-watch workout functionality, Bluetooth Smart connection with my Android smartphone and synchronization with third party apps. The watch looked great and fit on my wrist perfectly. It is a joy to run without sensors like straps and footpods.The built-in HRM produces almost identical HR stats to the Garmin with the HRM strap. I was not able to detect any deviations in the HR graphs. This is a clear advantage of the TomTom.I found that on several of my trail runs, the TomTom's GPS tracks were closer to the trail than the FR620 - not by much but noticeable on the satellite maps when you zoom in. Perhaps the...Read more

Initial Impression:Before I purchased this watch, I noticed several mixed reviews, so I was a little hesitant. After 2 weeks, 10 runs and several walks, and a direct comparison (side-by-side) with Garmin Forerunner 910XT with heart monitor (which I own for more than 2 years) these are my initial impressions:1. TomTom clearly picks up the GPS signal faster, sometimes 1 minute before Garmin (usually around 15-30s).Winner: TomTom.2. Garmin and Tomtom give quite similar running distances with an error of <5% between them. But it seems that Garmin tends to overestimate running distances when I compare them with Google Maps and other map systems. For example, in all certified marathons I ran (>10 at least), Garmin always overestimated the distance (up to 5%). So, TomTom seems more conservative in this regard.Winner: TomTom.3. HR. Garmin gives fairly stable readings over time that match very well your perceived effort. I rarely...Read more