Yep apologies, the 65mm was a typo; I meant the 60mm scopes under discussion the TS-611/2/34 series.
Also seems my recommendation of looking at earlier Birdforum threads doesn't quite cut it when pages linked to have disappeared |^|
Ditto what Joachim said. Probably going through threads on this forum is a good place to get info about your scope. Here's an earlier thread on Kowa eyepiece compatability :
The scope is not waterproof. Pretty sure the TS-611/2/3/4 series...