The Geo Monitor is an Earth/Air Shadowforged Armor released on June 27th, 2018 in the new "Seasons" Shadowforged Event for Season 24. It is effective against Air/Water armors, but ineffective against Spirit/Earth armors.
When originally released, this armor had base stats of 6051/5583, 12/9 per level (so 7227/6465 at level 99), so after Ascension (47/43 per level), maxed stats were 7697/6895. They were fixed shortly after release to what you can see above, however the Set Bonus was not changed. See Gallery for more details.