Features:
*More comfortable observation for almost 3D viewing.
*Built-in 1:1 erecting system
*Parfocal design
*Unique linear slide system for interpupillary distance adjustment is easier to operate.

Patented
#TW 105211430
#CN 201620803363.3
#US10,416,435 B2

Recommand diagonal after adapting to below telescopes:

Telescope Type	Recommand Diagonal
Newtonian / Dobsonian	No need. (Some Newtonian telescope may need the adapter.)
Refractor	Need panta or half panta prism.
SCT / Maksutov