Both calls Electric as well as Hand can be effective or educational . Place your caller where you want the coyote's to give you a shot to kill em. Hiding yourself , and playing the wind are key . I always carry a hand call , never had the battery run out in one yet . Even squalled in one with a Circe Jackrabbit ,that I bought over 20 years ago ,darn thing still works . Best of luck , its a lot of fun when it all comes together .