Canny collar - the collar for dog training and walking, helps with dog training and helps to stop dogs pulling on the leash 4.1 out of 5 stars 1,673 $34.99 $ 34 . 99. The lightest of sportdog’s training collars, the field trainer 425x works well for hunting enthusiasts who want to teach their dogs to improve their flushing and retrieving skills. it’s waterproof and has a range of 500 yards, with batteries that last 50-70 hours per charge—making it perfect for long days on the range, no matter the weather or terrain..