Top load battery is amazing. Shake awake is very sensitive so if you are wearing this on an edc it will probably always be on.

The glass is also perfectly clear with no tint or fish-eye at the corners. It has a large clear window and the red dot is crisp to my eyes whereas many competitors are not.

The laser itself has too many lines and has a big red outline making the laser have a starburst look. Not up to par with the competition.

Full power this thing only lasts for 4 days. Sleep mode is after 14 hours which is why the battery life in this unit is way way below the average for similar models. Most don’t have the time to fiddle with inaccurate search results.

Easy attach and detach. Comes with an extra battery. The cover is loose but for how inexpensive this item is i'm not holding that against it.