These high pitch plastic dog whistles are perfect for recall training and getting your pup's attention from a distance. Producing a shrill tone between 23-30kHz, these whistles let you communicate with your dog without disturbing others. The ergonomic designs allow for comfortable use with the included lanyards and key rings, so owners can keep their hands free during play and walks. Water resistant construction means they can withstand exposure to light rain or snow. Packaged with 2 whistles in assorted colors, this set gives you a backup in case one gets misplaced. An essential tool for any dog parent looking to strengthen their bond with their furry friend through positive reinforcement.