“When I first got the NTOI® Key Ring Flashlight I tried it out on myself just for fun; I literally could not see for 5 minutes!” – http://warriorsmagazine.com https://tacticalthings.com/product/the-ntoi-key-ring-flashlight/…

Tactical Flashlights

A key ring flashlight to illuminate or to blind and disorient an attacker…. 380 lumens packed into 3.3 inch x 0.53 inch (84 mm x 13.5 mm) and 0.56 oz (16 gram).