Very strong suction can cause long-term damage.

Very good.

Unfortunately not yet received, but I would still write a review and describe the function when it arrives.

This toy is amazing! It works really well, and the vibrating tongue provides great stimulation. The suction is very strong and seems continuous, which is a little concerning, as it doesn't appear to have an off switch for the suction, it just sucks intensely! Because of this, I ensure I can remove it easily when I use that feature. Honestly, the internal vibration of the egg and the tongue alone is sufficient! Even without the suction turned on, there's a slight suction created just from the warmth being drawn into the cup when it's in place. The color is also great! The seller is also very nice and responds quickly.