Once you've fathomed out the assembly and it's ready to "go" you wait, prod it, wait a bit more, check the batteries then decide that you'll send it back for a refund. Then, a brainwave (still don't know where that came from) I tried twisting the little pyramid to get some momentum going and hey presto...it worked, still going strong after 8 hours. Looks really effective, a shame that they don't put instructions in/on the box
Review by Pollyzzzzz 09/11/2016
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