I have to say: the very first time I used it I came after 15 seconda (yeah: fifteen seconds !!!)
It's internally so textured that the strong feelings made me cum quite quicly. But as you learn how to control it and stop at the right time for edging you can enjoy it for more and more time.

Now I can play with it for minutes and minutes enjoying the amazing textures and all the feeling it gives on my glans and frenulum. Last nite I played with it for 1 hour, and then I decided to cum inside (of course). Also the orgasm is more intense when you drop out your semen while the glans is stricted inside.

But........ I also noticed I almost destroyed it: the lips are now very wide broken (I can insert my 4 fingers instead of the two) and the inside is broken also: I had my semen spread all around.

The main advantage is a more trained session and with my parnter I can now last much longer to let her achieve the orgasm every time we have sex.