Description
LONG LASTING - Built for longevity. We only use the highest grade materials to extend the life of the battery.PERFECT FIT - Rigorously tested in many different collars. We guarantee a perfect fit everytime!.COMPATIBLE WITH R21, R51 AND MICROLITE COLLARS.Sold in 2 Packs, 4 Packs, 6 Packs and 8 Packs.BONUS - Complimentary Dog Training Ebook, Ebook Audio, and Pet Calming .mp3 included