This is a great beginner-friendly toy for prostate play. Its size is relatively modest, with a max diameter of 1" and a 0.75" neck. With 4.5" insertable length. The prostate stimulator has two motions at the same speed- clockwise and counter-clockwise. It feels good and provides a consistent form of stimulation that feels very much like a finger.

This toy's hallmark is the vibrating testicle pouch. Unfortunately, it was a little snug for me. Which is not uncomfortable; I just can't stay in the cup, they fall out. With this in mind, I would highly recommend this toy for people with average to smaller than average size testicles. I measured the testicle cup, and it is about 1 & 7/8" in depth and across.

The vibration patterns work the balls and the probe with 2 different motors and 9 vibration patterns. The vibration intensity is medium, and the sound is pretty quiet. It feels very cool and pleasurable to have the balls and prostate both get attention.

This toy works best seated or reclining because it has a tendency to squirm out if standing or moving around during sex. It is made of silicone and is USB rechargeable which I love.

Overall, a very cool rendition of a prostate massager.