Tested and works, you will need to put 3 303/357 button batteries in when it arrives. This Omnitrix Watch from Playmates Toys is a perfect addition to any Ben 10 fan's collection. With over 40 alien phrases and sound effects from season 3 of the TV show, this watch brings the action to life. This toy is sure to provide hours of entertainment for fans of the franchise, and it's a great gift for any occasion.