My thoughts are that they are the same modules as the Aixiz ones. Aixiz sent me a line module that looks IDENTICAL to the one on DX. Also, the line and cross lens modules are removable, so you can turn the line/cross into the focusable dot by simply removing the lens that converts it to a cross/line.
So, moral of the story, dont buy the Focusable dot one, buy the line/cross and remove the lens so you can use it whenever later, if you want to.
So, moral of the story, dont buy the Focusable dot one, buy the line/cross and remove the lens so you can use it whenever later, if you want to.