ET-802 'The Boss' E-Collar Remote TrainerThe BOSS is a well constructed 2 collar system that is robust and functional. Suitable for most sized dogs and for farming stock situations as the name suggests. If you are looking for a simple to use, well built unit that you can rely on then check this out. Proven in NZ as suited to New Zealand farming dogs and to withstand being buried in snow and rain. The wide range of corrective levels allows the handler to customize a level to suit the dog and