Eventually Palm ended up dividing their product lines along consumer and pro lines. The Palm zire line was kind of a consumer budget line of PalmOS devices with the Tungsten line being for more serious folks with bigger budgets. The Zire 71 featured this sliding mechanism allowing it to reveal a digital camera.
I unfortunately took one on a beach trip. While it never got close to the water, sand sticking to my clothes eventually made it’s way inside the thing. Whereupon the “sliding action” caused it to slowly sandpaper the ribbon cable connecting the two halves.
I had quite loved the device till then. I ended up replacing it with a Zire 72 which while functional, I did not like the aesthetics of as much.