SportDOG Brand® SportHunter® 1825XThe SportDOG Brand SportHunter 1825X boasts one mile range the farthest in the SportHunter family. The SD 1825X model also supports the highest number of dogs up to 6, with purchase of Add A Dog collars. Designed in the field by hunters and dog trainers just like you, the SD 1825X allows you to communicate with your dog using tone, vibration, or one of the 21 levels of static stimulation. The remote is designed to be operated without having to look at