SportDog - SD-350 - Yard Trainer for Introductory and Advanced Training Waterproof Shock Collar SportDog SD-350 SD-350 is a hybrid between basic and advanced training collars. Recommended for dogs 8 pounds and larger with low to moderate temperament. This waterproof collar has 8 levels of continuous and momentary stimulation plus tone only mode. It features up to 300 yard range.