A jazzed-up version of the original Duracell, this pattern features UV dubbing for making sure your fly gets seen. The Duracell is one of those flies that looks like a lot of things, but doesn't look too much like any one thing -- but it catches fish. Designed for getting down fast and drifting hook up, this is a great option for euro nymphing or a general prospecting fly under a hopper-dropper setup.