PLAY IN THE AIR...Slackers is a Colorado-based company whose goal is to inspire children to get active and play outside. Our official Ninja Timer will have your family running, jumping, and racing to beat the buzzer!FINISH IN TIME, COMPLETE THE CHALLENGE!Our premium Ninja Timer comes with a built-in LCD display showing the following features:StartStopRestartEASY TO USEPlace the buzzer on a flat surface, attach it to a tree, or mount it on a post using the provided wood screw. Adding this exciting feature to your backyard obstacle course couldn't be easier!BATTERIES NOT INCLUDEDThree AA batteries are required to power up the slackers Ninjaline Buzzer. Grab yours ahead of time so the family can start having fun the moment your ninja timer arrives.YOUR SATISFACTION IS OUR PRIORITYYour satisfaction is our guarantee. If you have any questions or concerns about the product, please do not hesitate to reach out to our team.