此獨家組合包含：
I've been through three other e-collars over the years and this is the first one where the range feels genuinely unlimited on my 40-acre property—no more dropped signals mid-command. The additional receiver means my second dog is finally trained on the same system instead of me juggling two remotes.
The extra receiver in this bundle saved me from buying a second unit, and the collar’s response time feels instant even at medium range. Setup took under five minutes, which surprised me given how many features are packed in. My dog’s recall has genuinely improved after just a week of training sessi
The receiver pair was super easy to sync with the collar right out of the box, and the build quality feels solid enough for daily training sessions. I've only had it a week but the range on the 280C has held up perfectly in my yard, and the responsiveness is exactly what I hoped for.