If you left click on any picture one time, it will enlarge. If you left click a second time, it will enlarge even further.
The back cover is easily removed by initially forcing your thumnail between the cover and the body of the Cruz. Slide your thumbnail around the perimeter of the Cruz, and the cover will separate enough that you can carefully remove it using just your fingers. No screwdrivers are needed to remove the cover.
Note: the internal 4GB micro SD card has been removed so the original owner can keep info private & use elsewhere. When you receive the unit & remove the back, the MicroSD card recess will look like
the above.
Using your thumbnail, you simply slide the cover to the right (its Open position) and raise it up.
You can put another 4GB, Class 2 microSD card in very easily. The card just sets in its notched position loose until the pivoting cover is pressed back down and slid into its locked postion. Very easy to install & remove.
Once the card is in its position, you just swing the cover back down & slide it to the left, which is its locked position.