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Waterpik Sensonic Electric Toothbrush STW-03 review

No. 9 of 10 in our electric toothbrushes ranking · Updated · How we rank

Our verdict: The Waterpik Sensonic Electric Toothbrush STW-03 ranks 9th of the 10 electric toothbrushes we compare, with 8.4 out of 10.

Waterpik Sensonic Electric Toothbrush STW-03

8.4/10

The Waterpik Sensonic STW-03 is a rechargeable sonic toothbrush with three modes, a built-in timer and a hard-sided travel case. It suits shoppers who want a travel-ready brush and don't need a pressure sensor.

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Why it's here

  • Three modes: clean, stain removal and gum care
  • Two-minute timer with a 30-second pacer
  • Hard-sided travel case and charging base in the box
  • Up to four weeks of use per charge, per the brand

Keep in mind

  • No pressure sensor
  • Wall adapter is not included, only a USB cable
  • Replacement heads from third-party sellers can be pricey

Why the Waterpik STW-03 scores 8.4

Each bar shows where it places among the 10 electric toothbrushes in this guide, so a full bar is 1st of 10. How happy owners are counts for most of the score.

  • How happy owners are9th of 10
  • How many rated it10th of 10
  • How new it is3rd of 10

Level with the Oral-B iO Series 4 Rechargeable Electric Toothbrush

The Oral-B iO Series 4 Rechargeable Electric Toothbrush and the Waterpik Sensonic Electric Toothbrush STW-03 score the same, so either is a safe pick. The Oral-B iO Series 4 Rechargeable Electric Toothbrush goes first because it has been rated by more owners.

About the Waterpik STW-03

The Sensonic STW-03 is a sonic electric toothbrush from Waterpik, the water flosser maker. It has three modes: Clean, Stain Removal and Gum Care. A two-minute timer runs with a 30-second pacer. The brush is water resistant and ultra-quiet, with a non-slip handle, soft bristles and ADA acceptance, per Waterpik. The brand cites a clinical claim of up to 4X more plaque bacteria removed in hard-to-reach areas than manual brushing.

Power is a lithium-ion battery that the user cannot replace. Waterpik says it gives up to four weeks of use per charge, though its spec table lists a run time of up to 90 minutes. The brush charges on a base with a USB-C to USB-A cable (5.0V DC, 1.0A) and an LED charging indicator. It can charge from a laptop, car, power bank or a wall adapter, but no wall adapter is in the box.

The box holds the brush, the charging base and cable, one Contour brush head and a hard-sided travel case. The head has wear indicator bristles. The replacement head model is STWB-3WW-B.

What owners report about the Waterpik STW-03

Owner feedback for this exact model is thin in the places we could open. What we found is positive. Owners say it cleans well, is easy to use and charge, and takes up little counter space. A few call it a good option for travel.

One owner noted that no spare brush head comes in the box. Waterpik lists one head, so plan to buy replacements. We found no pattern of faults, but the feedback we read is short and recent, so it says little about how the battery holds up after a year or more.

Who the Waterpik STW-03 suits

The STW-03 fits someone who wants a simple sonic brush with a few modes, a timer that paces each part of the mouth and a case for trips. USB charging helps if you already own a power bank or a spare adapter.

Look elsewhere if you want pressure feedback, since this brush has no pressure sensor. The Philips Sonicare 5300 or Oral-B iO Series 4 are better fits for that. Shoppers who want extra heads in the pack may prefer the Aquasonic Black Series Ultra Whitening Toothbrush.

Questions about the Waterpik STW-03

Does the Waterpik Sensonic STW-03 come with a wall adapter?

No. The box has the charging base and a USB-C to USB-A cable. It charges from any USB Type-A charger rated 5.0V DC, 1.0A, or from a laptop, car or power bank.

How long does the Waterpik STW-03 battery last?

Waterpik says up to four weeks of use per charge. Its spec table lists a run time of up to 90 minutes, and the page does not explain the difference.

What is the warranty on the Waterpik Sensonic STW-03?

Waterpik lists a two-year limited warranty and refers buyers to the owner's manual for details.

Does the Waterpik STW-03 charging base work with the Cordless Pearl combo?

Yes. Waterpik's charger page lists the STW-03 charging base and cable as compatible with the Sensonic and Cordless Pearl combo (STW-03-WF-13) as well as the STW-03W020 and STW-03W027 brushes.

What replacement brush head fits the Waterpik STW-03?

Waterpik lists STWB-3WW-B as the replacement Contour head for the STW-03W020. One head comes in the box.

Other electric toothbrush picks

The other badge winners in our electric toothbrushes ranking.

All 10 electric toothbrushes, compared

  1. 1 COSLUS C30 Electric Toothbrush for AdultsBest Choice 9.0 Check Price
  2. 2 7AM2M Sonic Electric Toothbrush for Adults, Type-C Charging 9.0 Check Price
  3. 3 Oral-B Pro 1000 Rechargeable Electric Toothbrush 8.9 Check Price
  4. 4 Aquasonic Black Series Ultra Whitening Toothbrush 8.9 Check Price
  5. 5 Philips Sonicare 5300 Rechargeable Electric ToothbrushBest Premium 8.9 Check Price
  6. 6 Philips Sonicare 1100 Rechargeable Electric Toothbrush 8.7 Check Price
  7. 7 Oral-B iO Series 5 Rechargeable Electric Toothbrush 8.7 Check Price
  8. 8 Oral-B iO Series 4 Rechargeable Electric Toothbrush 8.4 Check Price
  9. 9 Waterpik Sensonic Electric Toothbrush STW-03This review 8.4 Check Price
  10. 10 Philips Sonicare 4100 Rechargeable Electric Toothbrush HX3681 8.4 Check Price
See the full electric toothbrushes ranking

The Waterpik STW-03 on Amazon

Waterpik Sensonic Electric Toothbrush STW-03

The Waterpik Sensonic STW-03 is a rechargeable sonic toothbrush with three modes, a built-in timer and a hard-sided travel case. 8.4 out of 10.

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How we score it

Every score here comes from our ranking model; no editor sets the order. Too few review sites cover electric toothbrushes for their verdicts to lead, so this ranking is led by owners. It ranks products by how happy owners are, holding back any product few owners have rated until more agree. How many rated it and how new it is only settle close calls, and value for money earns its own badge rather than a higher place. We compared 20 models for this guide before settling on these ten.

Brands can't pay to be included or to move up. We last checked these picks in November 2026.

How we rank, in full

Where these facts come from