Bests & Worsts Reviews from Amazon

Very Nice & Fun To Play With. Don't Know If This Has Occurred To Anyone Else: The 2 Batteries are Connected in Series to Provide 6vdc. However, You Can Replace One of The Batteries, with a Shinny Copper Penny or a Wad of Aluminum Foil, which will Act As A Pass Through to Provide the LEDs with Only 3vdc. They'll Still Light Up but at a Reduced Brightness. So Far They've Been Illuminated for Over 24 Hours & Still Bright Enough to Be of Use. Update: After 150 Hours On, It's Very, Very Dim but Still Visible in a Darkened Room.