please do not buy this product, yes it is affordable and stylish, but you cant let looks fool you. This item has absolutly no anti shock. I litterally walked, yes WALKED with it and it skip atleast 7 times in a 9 second period. If you are planning on using this product for sitting only, by all means purchase it. but if you are planning on walking with this, ANYWERE, dont buy it. get the one that looks like it, but says 60 second esp. it doesnt skip. i took my old one in and traded it for the one with 60 second esp and works fine.