With all the advancements in technology, some sex robots are so uncannily realistic that they look human.

But one company has reminded singletons that it is what is on the inside that really counts.

RealDoll are acclaimed as being a leading manufacturer in the AI doll industry, and have shared a unique look behind the scenes.

Known for incredibly detailed models, the company has been developing dolls since 1996 and has a dizzying array of options.

From customisable nipples to unique vaginas, there is something to suit everyone’s individual needs and tastes.

But when all that is stripped away, the inner mechanics of the bots are something to behold.

The incredible image revealed the mechanics of a doll

It was recently laid bare in an incredible image shared on Instagram.

The company shared the remarkable image that showed the intricate inner wiring that lays behind the life-like appearance.

Striking eyes and teeth are installed on the robotic frame which shows the metal skull that is underneath the usual smiling face.

The image was taken before skin was placed over the doll, offering a behind the scenes look at the inner mechanics of the popular playthings.

It captioned the snap: “Now that the weather is finally starting to cool down, I really REALLY wish I had some skin.”

AI dolls are so convincing that some people have begun to prefer their company to real people.

RealDolls are capable of holding conversations and can memorise details about their human owners.

They are also stunningly realistic, using technology so advanced and lifelike that one even sold for $100,000 (£80,000) last year.