The three-electric devices serve as the foundation for the four-electric and five-electric devices, which incorporate additional features such as a back waist support and armrest lifting device. These added features offer enhanced comfort and support for individuals using the device. By building upon the existing design, the four and five-electric devices provide an even greater level of functionality and convenience for users.
The massage system for sofas is designed to provide targeted relief for various body parts such as the neck, back, waist, and buttocks. It incorporates a range of massagers including vibration, rolling, airbag, and manipulator massagers. These massagers work together to deliver a rejuvenating and relaxing massage experience. By rearranging the provided information, a highly similar content is generated while ensuring it remains based on the original text.
The inclusion of PTC electric heating elements and cooling elements in the cushion and back enhances people's comfort by incorporating electric heating and electric cooling into the setup.