SATISFACTION GUARANTEED –If for any reason you're not 100 satisfied with your swimming fish cat toys, simply contact our support experts for a new replacement or full refund. Before contacting, please ensure batteries are properly installed. BUILT-IN FLASHING LEDS – Each of our swimming robot fish toys have built-in LED's that flash when turned on, as well as moving fins for swimming. Perfect for getting your cat's attention and encouraging them to play with the toy and around water. AUTOMATIC SWIMMING FEATURE – We've designed our fish toys for cats with automated robotic fins that automatically begin moving around as soon as they're placed into the water. Then when you take them out, they automatically turn off to save power. STIMULATE YOUR CAT'S INSTINCTS – These interactive cat robot fish toys are a great way to help get your cat excited for playtime by stimulating their natural hunter instincts. They're also a perfect way to help introduce them new water activities. COLORFUL 4 PIECE SET– This set of cat toys comes with 4 uniquely colored swimming robot fish toys that your cat is sure to enjoy playing with and catching. The included colors may vary. 8 extra LR44 batteries and 1 installation tool also included.