That would explain why mine is increasingly lagging as it ages. Unfortunately, the libra H2O went with eMMC for water resistance, so replacement is slightly more involved.

Odd. The Libra 2 (the successor to the Libra H2O) had a uSD card with a conformance coating over it. Of course, the Libra Colour uses eMMC. I wonder why then went back and forth then back again. (All three are advertised as water resistant.)