Has anyone used Sportiiiis heads up display and heart rate monitor?. It's made by 4iiii innovations. I'm always interested in new techie gadgets and this one looks like it could be pretty useful. It allows you to have visible cues if your not meeting your target heart rate, cadence, etc. it also give verbal cues. It looks like it could be pretty useful, especially for cyclist that generally ride solo. Could be used as an incentive to improve speed etc.
If u use one, let's hear how it works.....pls
