Longines, patek philippe, tag heuer, rolex, citizen, seiko... does not matter, functionally a mechanical watch is obsolete. There is nothing that it could do better. For example, a citizen ecodrive is cheaper, slimmer, more elegant, way more accurate, lighter, more durable and completely maintenance free (I think it uses some sort of capacitors instead of a battery, only needs short term battery anyway, if most battery watches last for 8-10 years on a single battery the ecodrive only needs to last a week or a month so it's really tiny as it is constantly recharged). For more extreme durability, there's g-shock. A mechanical watch is an incredibly complex piece of fragile engineering, quartz is an amazing technology from a functional standpoint. But a mechanical watch is art.