[No Battery necessary] - Unlike most trackers that must be billed just about every couple times, this one particular operates right off your vehicle's energy. System goes to slumber a couple of minutes after the ignition cuts off. Set it and ignore it. The water resistant structure and rugged development https://www.trackerfit.co.uk/blog/stolen-car-recovery-why-24-7-monitored-trackers-make-a-difference/