Awesome product, very easy to set up and pair with mobile devices. I read a few reviews about it, stating it fails to give you face angle at impact. I agree its important info when analyzing your swing. I use my in conjunction with Optishot2, between the two Ive been able change my swing path from outside in to inside out, now hitting a draw on a constant basis. Recently went to Florida and brought the Zepp along, stats dont lie. Great product to "HELP" you understand your swing. No training aid will "fix" your swing but understanding why you hit a slice is the first step in correcting it.