Arcane Eye
You create an Invisible, invulnerable eye within range that hovers for the duration. You mentally receive visual information from the eye, which can see in every direction. It also has Darkvision with a range of 30 feet.
As a Bonus Action, you can move the eye up to 30 feet in any direction. A solid barrier blocks the eye's movement, but the eye can pass through an opening as small as 1 inch in diameter.
Arcane Eye 5e 2024 vs. 2014 edition differences
The 2024 version specifies the eye is invulnerable and can be moved as a bonus action, whereas the 2014 version does not mention invulnerability and allows movement as an action. Both have the same range, vision capabilities, and barrier interactions; duration is "up to 1 hour" in 2024, same as 1 hour in 2014.