Since the tracking kit comes with a device, battery, and a solar-powered case, its weight can raise questions about the strength of the magnets. Fortunately, buyers do not need to worry about that, as Spy Spot products are reliable, durable, and practical. Our tracking kit has six strong magnets embedded in the backside of the case. It is powerful enough to attach to any metallic surface without fail, making it the perfect spy equipment for bumpy roads and stormy rains.