The fuze is durable, but up to a point. The larger screen size makes it more prone to scratches and should be protected with a screen protector. And even a case for the fuze itself to protect against scratches and bumps.
Here’s a plastic case that many have found to be useful and it only costs one penny, not including shipping and handling.
http://www.amazon.com/Transparent-Clear-Crystal-SanDisk-Sansa/dp/B001ECP666
That along with a L-shaped adapter for the headphone jack is a small investment to prolong the life of the player. Mine has lasted almost 2 years now and it’s still working great.