Suunto Run 2 Ultimate Scientific Review! A lot of value!
In a Nutshell
The Suunto Run 2 delivers excellent wrist-based heart rate tracking for cardio activities (R=0.98-0.99 vs. ECG chest strap) and strong dual-band GPS performance (score 85), making it one of the best values at €299-349 for runners and cyclists. Sleep tracking remains unproven with only two nights of data showing poor REM agreement (28%) but acceptable deep/light sleep results. Weightlifting heart rate accuracy is weak, requiring a chest strap for reliable readings in that context.
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At €299 or dollars, the new Suunto Run 2 running watch includes offline maps at a decent price. Heart rate tracking accuracy is great for this price point, making the Suunto Run 2 a watch that can be definitely recommended, though there are some limitations to discuss in detail. The focus of the review is on data quality, specifically testing heart rate tracking, sleep tracking, and GPS tracking.
There are two versions of the Suunto Run 2: a 4 gigabyte model for $299 and a 64 GB model for $349. Both support offline maps and music, with more storage allowing users to keep more data on the watch. Details from Suunto about mapping functionality and potential limitations are still pending, but the mapping has worked well for normal runs.
The three most important changes compared to the original Run One are dualband GNSS for better GPS tracking, an upgraded optical heart rate sensor with 12 channels (also seen in other Suunto watches), and increased screen brightness from 600 to 2,000 nits. The heart rate tracking showed great performance in testing.
The display remains a 1.32 inch AMOLED panel but is brighter. Battery capacity increased from 295 to 380 milliamp hours. Suunto claims up to 10 days of normal use and up to 24 hours in performance mode, compared to 8 days and 20 hours on the original watch.
The basic design hasn't changed dramatically. It's still a 46 mm watch with stainless steel and mostly plastic construction with a five atmosphere rating. Plastic benefits include being relatively light, which probably helped with good heart rate tracking performance. The new model is about 0.2 mm thicker, and the watch body is 3 g heavier at 35 g, representing relatively small differences.
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