“21st lasts a little longer than other brands I've tried, but I'm having to charge the battery more frequently than usual and the batteries don't seem to last as long as they used to before wearing out completely.”
“I love this product, have tried many, and this would be my all time favorite! Only 1 problem, the battery I received did not work, so purchased one locally, I feel certain they will rectify this. Customer service is terrific!! Strongly recommend! Better than Mark10!!”
“This is a great product when a change is needed from the 2.4% strength that I normally buy. The flavor is different from the 2.4% products, so it makes a nice change once in a while.”
