UTG Bubble level scope.

I have one and I like it. Bubble is easier to see with reticle lit up. Glass is clear and it works very good. 

I have had one for about a year and a half(since they first came out almost) and I love it! If you shoot past 35 - 40 yds it really helps, especially out at 75 - 100 yds. I can see the bubble even without the lighted reticle turned on.