Diving flag buoy is mainly designed to increase the safety of recreational and professional divers. Placing diving flag buoy around a diving zone can help to keep motor boats away from the resurfacing divers or anyone who's conducting activities within the area. Moreover, diving flag buoy is not a single-function device. Its additional features are introduced along with the device instruction. In summery, it is a simple device that provides a great deal of features which can increase the safety and convenience of a diving zone to create an enjoyable environment for divers, swimmer and anyone within the area. Worldwide pat.