Narrow Down Your Choice in 30 secs!
As of this writing Bio Bidet offers a dozen bidet seat models. Narrow down your choice very quickly and make your research easier by answering some simple questions.

Good function and easy installation are sometimes hard things to balance. In this case, you are not faced with any uncomfortable dilemma.
Both bidet seats are pretty straightforward to install; both are electrically powered, so they’re going to be about the same difficulty, which is very low. Both house an onboard tank and neither allows for direct connection to your hot water system. No winner here.
One feature might help tip the scales for you; the BB-400 has a warm air dryer – which is a big plus and saves on toilet paper. That’s more soothing and potentially more hygienic.
Both have fine spray wands, but the BB-400 has three nozzles in one wand; the USPA-4800 is a dual-nozzle model. Usually, more is better, but two is plenty for me. Nothing to tip the scales here.
One minor feature on the USPA-4800 is a definite nice to have: silent mode. The USPA-4800 beeps when you make a selection. That beeping sound can be turned off, which I really would make use of, especially in the middle of the night.
That said, the hand-held remote for the USPA-4800 is hands down a winner for me. It’s easier for me to hold and use than the one for the BB-400. It also houses controls I find much easier to understand. Admittedly, that’s a personal thing. Your mileage may vary. They both do the job. And the BB-400’s isn’t obscure, just not my taste.
If you have children you might favor for the USPA-4800 for its “kids wash” feature, which adjusts for smaller users. I don’t have any but its presence certainly is no downside. It doesn’t up the price at all, and one does get visitors from time to time.
One thing that does make a difference for me is the pulsating wash – included on the USPA-4800 but lacking from the BB-400. How much weight you put on this feature is a strictly personal choice, naturally. For my money, it’s a medium value.
The pulsing water soothes. It increases hygiene for the same amount of water pressure. And I suspect it even helps keep the nozzle clean a little better. On the other hand, both models have an oscillating wash, so that helps balance things out a bit. Also, they both feature self-cleaning nozzles, so there’s that.
Now we get to an area that is a little more nebulous: style. One aspect of style isn’t really a matter of personal taste in bidet seats. The USPA-4800 is strictly an elongated model; the BB-400 comes in elongated or round style. So if that’s a requirement, your choice here is made for you. Keep in mind, though, that Bio Bidet has LOTS of bidet models to choose from, not just these two. Click here if you want to do a new search.
With that prelude, I personally like the USPA-4800’s looks better. That curved profile is different and appeals to my sense of the unique. And if your space near the wall is constrained, say by a countertop, the curved seat might help it stay up.
So, which to choose: BB-400 and its warm air dryer and so-so remote control, or the USPA-4800 and its stylish appearance, pulsating wash, and preferred remote control? I’m going to go with the USPA-4800. Beyond the desire to have a fashionable bathroom, I just know I’m going to like the functions better, in the long run.