The latest generation of sex doll heads are equipped with biological clock simulation chips, which can change the temperature and humidity of the mouth according to the set time period - a dry light mint flavor in the morning and a moist wine flavor in the middle of the night. The torso sex doll reproduces the chest rise and fall during breathing through a subcutaneous hydraulic device, and can even simulate the effect of cold sweat oozing out when nervous. These dynamic biological feature reproduction technologies have upgraded fetish behavior from static obsession to temporal interaction, greatly improving the authenticity and addictiveness of the experience.