UPDATE: I sent in my 1909 Sigma, that had been giving me issues. I received a 2209 as a replacement. Everything works as it should now. All features that where advertised are functioning properly. HRM monitor has good resolution and tracks up/down as it should. Cadence works fine, as does speed. Also had my cell phone with me, and did not get ANY interference or drop-out of data. Very pleased now. Thanks!!