makd511
you write:
"Teclast has separate buttons for Power and Hold - this has ONE for both functions"
Teclast C260 have just one button for Power and Hold... when it's needed to put the device in Hold it must be covered Play touch button while it's pressed the left side of Power button... sound very tricky... but it's not
Teclast C260 have another key on the other side with is the normal ON/OFF key.
And indeed it uses micro SD