It?s so cheap and disgusting. With these, I dont have to fear that my shot glasses are going to fall off. There is no option to contact the seller tho. Absolutely gorgeous brightly-coloured shoes (photo true to colour) for my 8 1/2 year old grand-daughter who has not seen them yet - lovely quality and beautifully packaged. I had barely put this set through the motions and not even given them a worthy outdoor running and sweating test yet. My kids have apple watches, so I promise that?s not an ignorant assumption. Overall great unit, powerful and with very long battery life. Tends to slide around though. For the low price you get a very cheap light weight construction powerstrip. Came well packaged.