worried about inserting sonic massager too far

by Graham
(Thatcham UK)

I've just purchased a sonic prostate massager and my main worry is about inserting the device too far, or indeed not far enough. How can I be sure this won't happen please?
Thank you for your help in this matter.
Graham

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Ron here...

Just insert to a comfortable level. Never push it in hard. It is just the grey tip area about an inch and a half or so.

Be gentle. No forcing. The vibrations travel around the whole area.