德国采购需求：背包, 产品展示

I'm interested in finding an affordable system that allows me to track geese across Europe and potentially worldwide. As this is primarily a hobby for me, I'm looking for solutions that are budget-friendly yet effective. Features such as real-time tracking, user-friendly interface, and durability would be great, but keeping costs low is my main priority. I'd appreciate it if you could provide some options or recommendations that meet these criteria. Any information on pricing, availability, and how the system works would be very helpful. Looking forward to hearing from you soon!