If you are looking for small and light GPS trackers for your adorable pigeons, try Skyleader 4U!
Skyleader 4U is 15% lighter and 3.2% smaller than previous module. It is suitable for European and Japanese pigeon rings and can be attached around the 12mm pigeon rings.
Skyleader 4U helps you to train pigeons according to their GPS tracks.
Get Skyleader 4U from Amazon UK now!