Review on 🔦 Compact Tactical Pen Light: High Lumen LED Flashlight for Camping, Emergency, and Repair - Water-Resistant & Pocket-Sized by Marc Gallner

They are well designed and have proven reliable to me. They are surprisingly bright, emitting the light of large flashlights in a pocket case. The rear derailleur button is protected by a thin rim that makes it easier to use, although I would have preferred the button to protrude more so the thumb can operate it more securely. So far very happy with them. They don't appear to have o-rings like some similar items but they are still satisfactory in form, quality and function. I can't comment on the battery life as I'm still using the former. Didn't expect extreme lifespan given the brightness but they still work well.