Artificer's Glasses

While wearing these glasses, if you are trained in Arcana, you gain a passive Arcana score equal to 10 plus your Arcana modifier. You gain the ability to detect magic with an Arcana check (or passively). You can also use an action to make an Arcana check to gain additional information about magic you detect, including its source or area, the school of magic, the level of a spell, or even the precise effect in question. Certain types of magic are harder to detect, for example Invisibility. The DM will set appropriate Arcana DCs for each level of information. 
While wearing the glasses, you suffer disadvantage on Perception checks, and a -4 penalty to passive Perception score. These penalties remain for 1 minute after you remove the glasses. 

Notes: Disadvantage: Perception, Detection, Eyewear