Question about Huawei Am61

how is battery capacity (in cold hard mAh) not A) a key specification, and B) a searchable filter?? this goes for ALL products with a battery. we're not dumb. we grew up with this shit. - i know that i still have to consider consumption, but it tells me a lot about the producers approach, and its for any product the first thing i look up... and its always somewhere deep down in the foldout "technical" "fineprint"... I don't believe digitech has so many customers that can't handle the concept of 'ampere.hour'...