Those units are very different from milliamps per hour (which is basically a nonsense unit) and watts (which are a unit of energy per time, therefore saying not

Those units are very different from milliamps per hour (which is basically a nonsense unit) and watts (which are a unit of energy per time, therefore saying nothing about how long the battery will last). I'm just trying to address the confusion here. Battery capacity is a relatively mundane detail, and I don't necessarily expect the people writing marketing copy to understand electrical terminology.