I don't feel like the JBL is particularly fragile. If you can find a store (e.g., Borders or Best Buy or Wal-Mart) that sells the Aluratek Libre Pro, the JBL is basically the same form factor, except for the battery bump at the back for the AA batteries (which actually makes for a nice handhold).
I suggest picking up a wrist strap for the JBL (like the ones on a camera). That might help prevent accidental dropping of the device.
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