When you need to get someone's attention underwater just pull the ball away from you cylinder and let go BANG!
Description
Just stretch it over the base of your Scuba tank: if you're right handed place to the right if you're left handed place it to the left. When you need to get someone's attention underwater just pull the ball away from you cylinder and let go BANG! Get the attention of your buddy, your students, or other divers from long or short distances.
1-800-4-DOLPHIN
(1-800-436-5744)
