I turned on it and I'm very satisfied with the purchase:
- The strap is well made with a rubber at the very flexible and soft electrodes
- The fastening system of the monitor itself is well thought out and minimizes the advance of the sensor relative to the torso which prevents it is too balanced vertically while running.
- It is waterproof, which seems to be the minimum for a device intended to be used on a sweaty torso, but that is not the case of those entry
- Dependably, received a load of 85%, it is at 75% after 2 months of regular use
- Works with many app => runtastic, Endomondo, polar beat, etc ...
- Compatible phones equipped with Bluetooth 4 (5 nexus in my case)