Nice idea - not bright enough

I had ordered these balloons to a themed party ("Black & White").
Then came yet standard white and black balloons These balloons light.
The balloons could be quickly and easily inflate, there were no failures - all 15 pieces worked.
Only the pull tab is 2 or 3 times demolished, so we had awkward friemeln from the balloon the rest, but it did not lasted too long.

The lighting was dim and it was dark outside, although the balloon shone not so nice and bright like the pictures. Although it was a color difference to the normal white balloons recognizable, but I had hoped for a stronger effect. Probably really is but only in completely dark rooms, where the balloon the only "light" are.

Positives:
- Long burn time - we lit the LEDs even after 3 weeks!
- Nice idea
- Easy to use

Negatives:
- Low luminosity
- High price