High quality rust free stainless steel rattle used to attract attention whilst underwater. Complete with comfort wrist lanyard to enable easy carrying whilst secured to wrist or attachment to equipment when not required. Emits a surprisingly loud noise when jerked from side to side - a noise that travels through the water a great distance. Unlike some similar items this quality unit does require aggressive movement for the sound to be created - we think this is wiser that continually emitting a noise that would be quite off-putting for other divers. Length 6 (12.5cm).