VINTRONS Replacement Battery for SPORTDOG SD-1225 Transmitter

this is the SD 1225 sport dog collar SD 1225 fits in between some of the units it is a little longer range than the 825 not quite as far as the 1825 unlike the 825 it has the larger size collar still not a big collar but it's it's gonna gonna have a little longer battery life it's gonna fit a little bigger dog the biggest difference between the 1225 and the smaller collars is that it has a wider range of stimulation choices on the collar this has the low stem mode the medium stem mode and the high stem mode so it's going to cover a really broad range of dogs if you have a dog that's extremely sensitive you can set it down on low if you have a dog that's really tough and really hard-headed needs a higher stimulation level then this collar will step up size-wise it's the exact same size as the 825 on the transmitter so it's a little bit smaller transmitter probably my favorite size of the