http://www.acedogsupplies.com.au/ Remote trainer review of the SportDog SD-1825. The SportDog Sport Trainer 1825 has to be considered one of the best remote trainers currently available. It has a HUGE range of 1600m, fully programmable with 13 modes to choose from, and you can train up to 6 dogs with it. Both the remote and collar are waterproof and rechargeable, plus the collar has the ability to be further programmed to adjust its power output to either a low, medium or high stimulation output. It’s truly a remarkable remote dog trainer..