My trusty running tool, Garmin Forerunner 910XT. The band gave way to its age and stretching it at the same place year in year out.
The situation yesterday evening:
The band tore again after I've fixed it with cable ties like you suggested.
Original tore.
Quick fix.
I guess the fix wasn't made good enough. I should have connected more that one bar with the ties. OK, i'll do that now and order new bands.
What is interesting that the band gave way meters before the finish line yesterday afternoon with good 12 hours spent on my wrist. Good timing :)
Stay tuned...