Privacy works excellent. Keen sells replacement bungee laces but they will never match the shoe original colors ever again. Crocs footwear are so good. It was easy to install and it working as I had hoped. Easy to install & very useful when going on vacation with the family Returned and ordered a different unit Just know that when buying it. Sony this model can be sold ,,,with a few touchups and a real manual,, no soft ware changes ,,in other wordsI will buy the protected marketing rights ,, can make changes ,, Sony can not ,,will not alter any software, hardware changes , for any reason(s) ,,will not compete against us, for 18 months. Music was just OK. Go for it!