Well, I got a E12 from Ernest through GadgetsForGolf,paying the price, ship and custom and I get a device that do not reach the specifications by far. I write to Eric Lyman from GadgetsForGolf and to the manufacturer asking for ability to recalibrate and I'm still waiting for response. The Ernest E12 seems to work less than more with perfect shoots (straits, not sliced nor drawed), so Ernest, Eric Lyman thanks for nothing !. I was considering to buy a E14 but I have give up the idea. Honestly I think this level of price is not easy to manufacture a device with such a features.