Slightly disappointed that they didn't put the LED lights in the best spot. They are located at one end of the vesicles and do not glow above or below the vesicles. This makes it difficult to pinpoint the exact center of the bubbles because the light at the end of the bubble where the LED is located will "sparkle" making it look different than the other end of the bubble. I would place the LEDs above or below the vials. I think this would work much better. However, it is useful to use in dark places.
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