The product is a MZ 18650 3000mA 3.7V Li-ion Battery, its PCB life is around 10 years.High rate discharge, no "memory effect" Short ciruit, overcharge and discharge protection PCB life is around 10 years, it is green42733
"They do not have night vision. I guess you get what you paid for."
"i got the item and tested it and it does not seem to work very well and the screen print is way to small to see. i would not suggest this as a good purchase. i gave it as a gift and we spent an hour trying to get it to work. we drank to see if the alcohol level would read and even after 3 drinks it showed no alcohol in the system."