A small, single-lens eyepiece originated from [[Dragon Ball Z]] that is worn wrapped around the side of the head. The device typically sports a [[heads-up display]] that provides its wearer with statistics or information on their surroundings, similar to a [[head-mounted display]]. Its most well-known feature, however, is its ability to calculate the power level of any living being, and displayed the result as a number.

Not to be confused with the [[monocle]], another single-lens eyepiece used expressly for correcting vision like [[glasses]].

h4. See also
* [[It's over 9000 (meme)|]]
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