Obito has the standard mangekyou sharingan(not eternal) and it is impossible for him to gain eternal ms because he doesn't have a sibling in which he could exchange his eyes with.
Custom Obito Eternal Mangekyou Sharingan / Eternal mangekyou sharingan, kullanicisina zarar vermez, eski halinden cok daha gueclueduer ve kullanicisina bir cok gueclue oezellik bahşeder.