This is a diving bell (stick) that can be used for signals and communication during diving. It makes a sound when tapped lightly on the tank, allowing you to signal your buddies underwater. Includes a convenient red strap with a carabiner, making it easy to attach to your BCD, etc. It also prevents it from falling. [Product Contents] ・Diving bell body (stainless steel) ・Red strap & carabiner [Condition] Excellent condition with little use. There are some minor scratches, but there are no problems with the operation.