They've given me great peace of mind. I have a tracker for my campervan that I purchased prior to my husband and I headin gout on a 4-month journey. Given that there would be times we'd be leaving the van and adventuring through towns, we wanted to be sure we could determine where the van was should it be stolen with all our possessions! While thankfully we never had to use it as a result of it being stolen, it gave me peace of mind. We now use it to monitor the van in our Seattle neighborhood, which may be more at risk than on the road, actually! The battery lasts a good long time. Greatly appreciate your tool.