The strap is a bit more difficult to put on compared to the one I am replacing and the watch seem to drop out connection with the strap more often than the one I am replacing.
The heart beat alarm feature on the watch is based on age and resting heartbeat with no provision for adjusting for one's fitness level. Therefore the high heart rate alarm comes on for people with low fitness level getting into training. Serious trainers may want a watch where you can directly set the alarm levels yourself. Alternatively, I can probably manipulate the age and resting heart beat to get the alarm levels I want but it is more trouble.