I’ve recently got my hands on Polar’s new RS300x model, with an aim to integrating Polar’s new FlowLink interface into iSMARTtrain, starting the with RS300x.
The RS300x is functionally pretty much the same as the RS200 – it provides average heart rate & speed for each session and each lap, as well as time in HR zones. There’s no continuous data like there is from, say, an RS800sd. In addition to using the S1 footpod for speed/distance measurement, the RS300x also supports the G1 GPS pod, although this only provides speed and distance information, not (as far as I’m aware) actual GPS positional data.
The FlowLink interface is a square plate with a dished out area in the middle. The HRM is placed face-down in the dished out area, and an indicator light turns green to show that a connection has been established between the FlowLink and the HRM. Electronically, the interface seems to work in a similar way to the Polar Interface Plus and Advantage Interfaces from the ‘90s, which polar abandoned in favour of IR with the introduction of the S710. In use, I’ve found the data transfer FAR more reliable than SonicLink.
In iSMARTtrain, the data is presented in the same way as the RS200 & CS200. The main Data Graph shows the laps and the average HR & speed for each, together with the averages for the entire session. The SportZones dialog shows the time spend in the various HR zones. The zone settings used are read from the watch when the session is downloaded.
The latest version of iSMARTtrain which supports the RS300x has just be released and can be downloaded from here – http://www.ismarttrain.com/Beta/