Classic-style two-person massage bathtubs are usually equipped with a variety of functions to provide users with a more comfortable and relaxing bathing experience. Here are some common functions:

Spa massage function:

Bubble massage: Bubble nozzles are installed in the bathtub, which can release a large number of bubbles, creating a massage effect in the water, helping to relax muscles and promote blood circulation.
Water flow massage: Equipped with water flow nozzles, the water flow intensity and direction can be adjusted to provide more precise water flow massage, relieve muscle fatigue and stress.
LED lighting system:

Some two-person massage bathtubs are equipped with LED lights, which can provide a variety of colors and light effects to create a more relaxing and romantic bathing environment.
Heating system:

The built-in heating function of the bathtub can keep the water temperature constant, allowing users to enjoy a continuous and comfortable warm water massage experience, especially in cold seasons, which can effectively improve the comfort of bathing.
Sound system:

High-end models may have a built-in sound system, and users can connect their mobile phones or other devices via Bluetooth to enjoy music entertainment while bathing.
Digital control panel:

Most modern double massage bathtubs are equipped with a digital control panel, which can precisely adjust the water flow intensity, bubble function, temperature, lighting, etc., which is easy to operate and convenient for users to customize the bathtub experience.
Massage nozzle layout:

The nozzles are usually precisely arranged in different positions of the bathtub according to ergonomic design, such as the back, legs and feet, to ensure that each part can be properly massaged.
Automatic cleaning function:

Some high-end double massage bathtubs are equipped with automatic cleaning functions, which can self-clean after use to avoid scale and bacteria breeding and keep the bathtub hygienic.
Bubble and water flow mixing system:

Some bathtubs combine bubbles and water flow to provide a more comprehensive and comfortable massage experience. Sometimes this mixing system is called “air and water flow combination” or “water and air dual massage”.
Comfortable seat design:

Double bathtubs generally adopt ergonomic seat design to ensure that both people can get a comfortable sitting or lying experience while bathing, increasing the overall comfort.
In general, the classic style double massage bathtub not only pursues high efficiency in function, but also pays attention to details and comfortable experience. It is an ideal choice for enjoying spa relaxation at home.