Revision as of 13:38, 27 December 2014

The Ambit2 R, available in black or white.

The Suunto Ambit2 R is one of my recommended running watches. The "R" in the name is for "Runner" and is the moniker for the cheapest of the Ambit2 range. It lacks some of the features of the more expensive Ambit2 watches, but the price is far more attractive. The Ambit2 R offers great functionality and reasonable GPS accuracy, and it's only significant flaw is the inability to display pace from a Footpod.

1 Ambit2 R Pros

• The watch is highly configurable, and configuration is via a web site rather than fiddling with the watch. The Ambit2 can display up to 8 different pages of data, including various graphs.
• You can download or create 'Apps' for the Ambit2, which allow for some degree of extensibility. These are not really applications, but small scripts so the functionality is rather limited. It's nothing like the functionality that Garmin has in their Connect IQ. I have developed two apps that calculate Relative Running Economy for the Suunto Ambit. One calculates a moving average and the other a smoothed current value.
• Data has to be uploaded to the Suunto website movescount.com but it can then be exported in many different formats including TCX and FIT.
• While the standard battery life is not great at 8 hours, you can configure the Ambit2 so it only checks GPS data periodically, which compromises GPS Accuracy but improves battery life. I found that after 20 hours of use with 1 minute GPS checks I had a claimed 61% of battery life left, giving a projected life of about 50 hours. For more details, see GPS Accuracy and Sampling Rate.
• The Ambit2 will download a list of GPS satellites for quicker GPS acquisition. This seems to work well, and when the cache is stale because the watch has not been connected to the internet for a while, GPS acquisition is still reasonable.
• The Abmit2 displays Training Effect, but unlike the Garmin units you have to explicitly set your 'activity class' rather than have the watch work it out automatically. In many ways I prefer having the activity class set explicitly.
• There is also support for " Recovery Time", though it's less obvious than the Garmin implementations which display the value at the end of each workout. The Recovery Time displayed at the end of each workout is for that workout alone, which is rather useless. You can go into the log book to find the cumulative Recovery Time but that's a pain.
• The Suunto web site (movescount.com) has remarkably good analysis and data from the Ambit2.
• The "R" version of the Ambit2 is available in black or white, with the white version intended for women. I tried the white version as I have smaller wrists and I found the materials used for the strap are remarkably soft and comfortable.
• The Ambit2 can display a map of a route, or give you a map for going back to the start, though there is not a simple display of your current route.
• If you're prepared to pay more, you can get other versions of the Ambit2 that provide extra functions.
  • There's also a Sapphire version that uses "sapphire glass" which is far tougher, but given the extra cost it's only worth considering if you're really tough on your watches.

2 Ambit2 R Cons

• The biggest downside to the Ambit2 compared to the 310XT/910XT/610 is that there is no way of displaying your current pace from the Footpod while using GPS for overall distance and course. You can only use a footpod by turning off GPS, which is pretty useless.
• The Ambit2 does not have a vibration alert, which is something I miss far more than I'd have expected. The vibration is useful for alerts, as you may not hear the beeping in noisy environments or when wearing headphones. The vibration in other watches is also useful as a confirmation you've actually pressed the lap button.
• Like any complex device, the Ambit2 can occasionally need a reboot. Sadly, while you can shut down the Ambit2 from the menu, the only way of waking it up again is to plug it into a USB power source. This should be a very rare issue, but if it happens to you on or just before a race, you're screwed. (To shut down, press the "Back/Lap" and "Start/Stop" buttons pressed to enter the service menu.)

3 Suunto Ambit3

Suunto has announced the Ambit3, but that's only worth considering if you are intending to buy the more expensive Ambit2 or Ambit2 S. The Ambit2 still offers far better value for money. The main changes for the Ambit3 are some activity monitoring functionality, smartphone uploads, and a swap from Ant+ to Bluetooth sensors. Currently the Bluetooth sensors are not as widely available as Ant+, and there are reports of compatibility problems with the Ambit3 and a number of sensors.

4 What's Missing

While I don't consider these missing features as 'cons', it's worth understanding the features that are missing compared with other watches.

• Altimeter. GPS is far less accurate vertically than horizontally, so a barometric altimeter can provide a much better idea of your ascent and descent. It can also be useful for navigation if you're ascending or descending a mountain. In some races I've been far more interested in how much ascent is left rather than the distance to the top. (The more expensive versions of the Ambit2 add in an Altimeter.)
• Running Dynamics. Some of the newer Garmin watches can show and record Vertical Oscillation (VO) and Ground Contact Time (GCT).
• Alerts. Some watches will alert you when a metric is out of range. The alert for Cadence is really useful and one of my favorite features.
• WiFi/Bluetooth Uploads. While the automatic upload of workouts via WiFi or Bluetooth to a Smartphone is nice, the upload will typically only go to the manufacturer's web site.

Please support this site This review was made possible by readers like you buying products via my links. I buy all the products I review through normal retail channels, which allows me to create unbiased reviews free from the influence of reciprocity, or the need to keep vendors happy. It also ensures I don't get "reviewer specials" that are better than the retail versions.

5 Comparison Table

I evaluate running watches in three distinct ways. Firstly, you can use a watch on its own, without any kind of Footpod. This is probably the most common way runners use their watch, but you miss out on a lot. The second rating is with a standard Footpod that is available quite cheaply. These Footpod's can be reasonably accurate once the calibrated, but calibration is a little tedious. The final evaluation is with the Stryd Footpod, which is vastly more accurate than any other type of Footpod, or and more accurate than GPS. The table below looks at the score, and the value for money of each watch for each of the three conditions. (I’ve also tested the Apple Watch 3, but I’ve not included it in these tables as it’s not really a running watch.)

The score is the sum of how well each watch can answer the four basic questions (how far, how fast, where are you, what's your cadence), plus some bonus points.

1. The "How far you've run" will be based on GPS only for "without Footpod" and "with Standard Footpod", but based on Stryd if supported in the "with Stryd Footpod" table..
2. How fast you're running assumes you're using a Footpod if it's supported, otherwise the rating is 0-2 based on GPS accuracy.
3. The "Where are you?" is based on various navigation features such as back to start, breadcrumbs, and preloaded maps. For some watches, you have to turn GPS off to get the benefit of Stryd, so those watches have worse "where are you scores" with Stryd than without.
4. The cadence score uses 1 point for an internal cadence sensor, 2 points for footpod support, 1 point for support from chest strap cadence, and 1 point for cadence alerts.
5. I give 1-2 bonus points for application support, 1-2 bonus points for data upload, 1-2 bonus points for Optical Heart Rate Monitoring, and 0-1 bonus points for battery life.
6. Value for money is the score divided by the price (at the time I last updated the table.) Your needs may be different, so you might weight the different aspects of the watches differently, or be basing your decision on different criteria totally. Hopefully this table will give you a good starting point for your decision.

5.1 Score Breakdown without a Footpod

5.2 Score Breakdown with a Standard Footpod

5.3 Score Breakdown with a Stryd Footpod

5.4 Basic Features

6 Navigation Features

For "navigation":

• Color Maps gives you full color maps, rather like a smart phone, with roads and paths marked out.
• Track Outline is a display of where you've run, rather like a breadcrumb trail. If there are maps, the outline is superimposed otherwise this is just the outline on its own without any context.
• Course Outline is an outline of a route that can be downloaded. I've found this useful during ultras or in unfamiliar cities where I've needed to know where to go.
• Back To Start is a simple arrow point to your starting point, so it won't help you backtrack.
• Back To Waypoint returns you to a previously marked location using a simple arrow to point.
• Compass. A magnetic compass can help you orient yourself or the map. Without a magnetic compass you have to be moving for the GPS to give you a sense of direction.

(Older Reviews: Polar RC3 GPS, Soleus 1.0, Motorola Motoactv.)