The iridescent coating catches the light, and the glow-in-the-dark body can be recharged before fishing in low light. The weight on the leader determines how fast the entire rig sinks.
Choose a spacing that allows the baskets to move freely, then alternate between jiggling the line and pausing. Do not confuse this floating model with the Mini Calmarette Plombée, which is designed for cast-and-retrieve fishing.