Alpha UX Pearl vs TOTO K300 Washlet: Bidet Toilet Seat Comparison

The Alpha UX Pearl (UX-EW) and TOTO K300 with eWater (SW3036R#01) are two pillars of the premium bidet seat category. The UX Pearl is the newest model in the Alpha Bidet line and is quickly becoming a customer favorite. Its spray performance, build quality and feature set far exceed its mid-level price. The K300 washlet is made by industry powerhouse TOTO, and is one of the most popular bidet seats in this category.  So how do these well priced, top quality bidet seats match up against each other? Which one is the best for you?

In this article, we’ll address these topics and compare the Alpha UX Pearl and TOTO K300 head to head so you can find out which bidet seat is the best for you.

Design

Alpha Bidets are known for their low profile design, sturdy lids, and LED nightlights. The UX Pearl certainly fits the bill with its 4.5” height in the rear and sturdy sittable lid. Its white LED nightlight and back-lit control knob give it a wow factor while its slim design allows it to be compatible with some compact toilets.

The TOTO K300 is a bit thicker in the rear, measuring in at a height of 5.25”. It has a great modern design with the signature TOTO aesthetic but does not have a nightlight. The K300 features a lid that exposes the bidet’s upper panel and drapes over the seat below. The UX Pearl’s lid has a unibody design that covers the entire upper panel, but doesn’t extend over the front of the seat.

The seating area for both the UX Pearl and K300 are similar and both models are only available in an elongated size.

The UX Pearl utilizes a modern style side control knob in addition to its remote control. The K300 does not have any auxiliary buttons located on the unit itself. 

Both the UX Pearl and K300 feature an attached water hose connection on the left. The K300 also has its electrical cord on the left, whereas the UX Pearl has it on the right side.

Feature

Alpha UX

TOTO K300

Adjustable Nozzles

Yes

Yes

Adjustable Spray Pressure

Yes

Yes

Adjustable Water Temperature

Yes

Yes

Self Cleaning Nozzle

Yes

Yes

Premist

No

Yes

Heating System

Tankless

Tankless

Slow Closing Seat & Lid

Yes

Yes

Pulse Mode

Yes

Yes

Nozzle Oscillation

Yes

Yes

Heated Seat

Yes

Yes

Soft Close Lid

Yes

Yes

Warm Air Dryer

Yes

Yes

Energy Saving Mode

Yes

Yes

Wireless Remote

Yes

Yes

LED Night Light

Yes

No

One Button Wash and Dry

Yes

No

Sittable Lid

Yes

No

Round Size?

No

No

 

Measurement

Alpha UX

TOTO K300

Front Height

1 5/8 in

1 5/8 in

Rear Height

4 1/2 in

5 1/4 in

Length

20.4” (Elongated)

20.8” (Elongated) 

Width

15”

15.1”

Electrical Cord

45 in

48 in

 

Spray Capability 

The Alpha UX Pearl and TOTO K300 both offer above-average spray pressure when set to their max settings. The UX Pearl’s rear wash is comfortable and aerated and will feel similar to the K300 “hard spray” mode. They both offer nozzle oscillation and pulse spray options as well. 

The K300 has an additional soft rear wash option that the UX does not, which offers a wider and gentler spray pattern for those that prefer it. The feminine wash on both models offers a comfortable and wide spray pattern.

Water Heating

The UX Pearl and K300 both utilize a tankless water heating system. This allows users to enjoy unlimited, on demand warm water during their wash cycles. This also has the added benefit of being more energy efficient because the water heater sits idle until you begin washing.

Unique Features

Both the Alpha UX and TOTO K300 come fully loaded with all the typical bidet seat features including front and rear warm water wash, heated seat, warm air dryer, deodorizer, two user presets, and adjustable settings. Here, we’ll cover some of the unique features that set them apart. 

Sittable Lid - The Alpha UX Pearl is one of the rare bidet seats on the market where the lid is designed to be sittable when closed.  It supports up to 300 lbs. The TOTO K300’s lid cannot be sat on.

LED Nightlight - The UX Pearl has a photosensitive LED night light that illuminates the toilet bowl for nighttime bathroom trips. The K300 does not.

E-Water - The K300 has TOTO’s unique E-Water feature. This feature uses electrolyzed water to pre-mist the toilet bowl in an effort to keep it cleaner.  It’s meant to keep foreign material from sticking to the bowl. Other brands like Alpha Bidet do not have this feature.

Pure Breeze Bowl Sanitizer - The UX Pearl has Alpha’s unique Pure Breeze function which utilizes an air plasma generator that sanitizes and freshens your toilet bowl by circulating ion particles. 

Remote Control

Both the Alpha UX Pearl and the TOTO K300 offer wall mounted wireless controls. The K300 remote is dual sided: the front side has the basic wash, dry, nozzle and pressure settings, while the back side is for temperature and advanced settings. It is longer than Alpha's and both remotes utilize physical buttons instead of touch-sensitive ones. 

The Alpha UX has one of the simplest remotes on the market.  In addition to the wash, dry and adjustable settings, there are also two shortcut buttons for its “Easy Wash” and auto “Wash N Dry” functions near the bottom.  Both remote controls are intuitive and easy enough to use for all ages.    

Nozzle Construction

The TOTO K300 uses a single, plastic nozzle for its various wash functions. The Alpha UX uses a single, stainless steel nozzle for its wash functions - it is uniquely curved so that it minimizes splash-back and achieves a better cleaning angle. Both nozzles are self-cleaning and offer enough reach and adjustability for most users. 

Warranty

The Alpha UX Pearl is covered by a 3 Year Manufacturer's Full Warranty:

100% coverage of all parts and labor for the entire bidet for the first 3 years from original date of purchase.

The TOTO K300 Washlet is covered by a 1 Year Manufacturer’s Full Warranty:

100% coverage of all parts and labor for 1 year.

Conclusion

Overall, both the TOTO K300 and the Alpha UX Pearl are fantastic choices with great quality for their price. The question of ‘which is better’ comes down to what you value most in a bidet seat.  If you prefer a slimmer and sleeker looking bidet with a 3 year warranty and advanced sanitizing functions, go with the Alpha UX Pearl. If you want the TOTO name with more variable spraying options and pre-misting of the toilet bowl - then the K300 is the bidet seat for you.  Both have stellar reviews and from BidetKing’s perspective, you can’t go wrong with either choice.

 

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