The first mistake is using “slim” the way Lost Mary OS5000 marketing uses it, without a ruler. D91’s slim is 10 mm.

The second mistake is copying Geek Bar 5000 or Hyde Edge puff language onto D91. Puff ratings for those products are unknown here; D91 does not get a fake puff score to keep up.

The third mistake is treating 82 mm height as a pocket guarantee. Height 82 mm is taller than D95’s 57.4 mm. Ultra slim is thickness, not shortness.

The fourth mistake is publishing an internal mAh from the engineering range as a carton number.

The fifth mistake is leaving this domain to “check the stick you already own.” This URL only checks D91.