I just got one last week and the bloody thing has managed to startle me about ten times already. The main problem, and it’s one of my own making, is the ring tone. I chose the sonar ping, and set the volume for loud. When you’re out walking on the street you can barely hear it, but when someone calls me when I’m at home I’d swear there was a destroyer twenty feet above me about to drop a depth charge! Still, despite the intermittent cardiac events I love it.