The CA-S clamp adapter connects Swarovski binoculars to the VPA II adapter. With the included insert rings, the clamp adapter can be adjusted to perfectly fit the respective size of the eyepiece.
The CA-S fits together with the VPA II smartphone adapter the following eyepieces:
ATX/STX
ATS/STS 20-60x & 25-50xW
ATC/STC