Comparing two massage chairs from the same company can be an easy task since most of the time the newer model means better quality and advancements in the product. The Osaki OS-4000T is the newer model than the Osaki OS-4000, but, for the most part, these two massage chairs are identical.
Osaki Massage Chair Aesthetics
The Osaki OS-4000T and OS-4000 are aesthetically the same. You cannot tell the two massage chairs apart. Osaki specializes in comfort so both of the massage chairs are upholstered with leather. The construction of the two massage chairs are duplicated and both of the models come with the same color options, black, brown, charcoal and cream.