No specific features listed.
Insulated, Aerated Bait Containers: Bubbles B-11 model pump runs up to +/- 40 hours with 2 alkaline D batteries, also runs on 1 battery. Impact resistant case with rubber booted switch. Pumps 1.4 STL / minute. Hard shell bucket with .562" insulating foam liner. Special weighted air stones provide greater dissolved oxygen.
