After a promising start in early June with a new C3, the device got very unreliable when syncing. Some discussions with support led to a hard reset a few days ago and the C3 now syncs with my iPad and is showing live HR with only a couple of dropouts. I want the live data on screen to feedback when using a Waterrower. A second issue was reliability of the HR figures. I was convinced the C3 was under-reporting HR, often to a significant degree. I’d already tried loosening the strap and wearing it further from the wrist joint without success. Today I loosened the strap still further so that the C3 sat on my lower forearm. For the first time it registered activity in Peak where I suspected it should be. One remaining glitch is that despite reading 140bpm periodically during exercise, the chart in the app records the highest peak as 132. A minor point, but a discrepancy I’d like to understand if anyone has an answer please.
