The Sleepless Eye is a Demon Unique ring with no boss attached: it drops anywhere in Hell, most often from H1 up (rarer below that home difficulty, never above it), and nowhere else. Every copy is item level 110, and there 0.2% of what falls comes up Unique. It is built on Immaculate Ironglass Ring — step 6 of the Ironglass Ring line, item level 80 and up.

It always rolls the same numbers: +52 Armor, +9% Critical Chance, +20% Critical Damage, +12% Critical Chance, +52% Critical Damage and +34% Cooldown Recovery.

One Unique drop in 40 is a Mythical copy: the same item carrying 15–25% Mythical Energy that boosts every stat on it and can never be changed; the 15% floor is 10 times as common as the perfect 25%.

On top of that it carries The Sleepless Eye — +12% Critical Chance. +30% Critical Damage.

“It watches, so you may look away.”