Thank you for viewing. Unopened, one box, two units. Loose, one unit. There are a total of three. I no longer need the cartridges as I have replaced my shaver. The box states that it is compatible with all Braun Clean & Charge systems. Although it is new and unused, please refrain from purchasing if you are concerned about storage by a private individual. Thank you. I am open to selling individual units and price negotiations. Instant purchase is welcome.