HOW DO I INSTALL/REPLACE THE BATTERY?

Hold the device securely face down.
Insert the tool provided into the slot on the case back.
To open, apply light pressure while turning the tool to the left until the top of the tool aligns with the small guide dot on the top rim of the case. Do not over rotate.
Remove the case back manually.
Insert the battery with the “+” or logo facing up.
Return the case back.
To close, apply light pressure while turning the tool to the right until the top of the tool aligns with the center dot on the top rim of the case. (Figure D shows the case back in closed position)